diff --git a/packages/google-cloud-bigquery-connection/protos/google/cloud/bigquery/connection/v1/connection.proto b/packages/google-cloud-bigquery-connection/protos/google/cloud/bigquery/connection/v1/connection.proto
index 1c316e3af70..ee0dba14ad8 100644
--- a/packages/google-cloud-bigquery-connection/protos/google/cloud/bigquery/connection/v1/connection.proto
+++ b/packages/google-cloud-bigquery-connection/protos/google/cloud/bigquery/connection/v1/connection.proto
@@ -233,6 +233,9 @@ message Connection {
     // Amazon Web Services (AWS) properties.
     AwsProperties aws = 8;
 
+    // Azure properties.
+    AzureProperties azure = 11;
+
     // Cloud Spanner properties.
     CloudSpannerProperties cloud_spanner = 21;
 
@@ -275,6 +278,13 @@ message CloudSqlProperties {
 
   // Input only. Cloud SQL credential.
   CloudSqlCredential credential = 4 [(google.api.field_behavior) = INPUT_ONLY];
+
+  // Output only. The account ID of the service used for the purpose of this connection.
+  //
+  // When the connection is used in the context of an operation in
+  // BigQuery, this service account will serve as identity being used for
+  // connecting to the CloudSQL instance specified in this connection.
+  string service_account_id = 5 [(google.api.field_behavior) = OUTPUT_ONLY];
 }
 
 // Credential info for the Cloud SQL.
@@ -301,7 +311,8 @@ message AwsProperties {
   oneof authentication_method {
     // Authentication using Google owned AWS IAM user's access key to assume
     // into customer's AWS IAM Role.
-    AwsCrossAccountRole cross_account_role = 2;
+    // Deprecated, do not use.
+    AwsCrossAccountRole cross_account_role = 2 [deprecated = true];
 
     // Authentication using Google owned service account to assume into
     // customer's AWS IAM Role.
@@ -337,6 +348,34 @@ message AwsAccessRole {
   string identity = 2;
 }
 
+// Container for connection properties specific to Azure.
+message AzureProperties {
+  // Output only. The name of the Azure Active Directory Application.
+  string application = 1 [(google.api.field_behavior) = OUTPUT_ONLY];
+
+  // Output only. The client id of the Azure Active Directory Application.
+  string client_id = 2 [(google.api.field_behavior) = OUTPUT_ONLY];
+
+  // Output only. The object id of the Azure Active Directory Application.
+  string object_id = 3 [(google.api.field_behavior) = OUTPUT_ONLY];
+
+  // The id of customer's directory that host the data.
+  string customer_tenant_id = 4;
+
+  // The URL user will be redirected to after granting consent during connection
+  // setup.
+  string redirect_uri = 5;
+
+  // The client id of the user's Azure Active Directory Application used for a
+  // federated connection.
+  string federated_application_client_id = 6;
+
+  // Output only. A unique Google-owned and Google-generated identity for the Connection.
+  // This identity will be used to access the user's Azure Active Directory
+  // Application.
+  string identity = 7 [(google.api.field_behavior) = OUTPUT_ONLY];
+}
+
 // Container for connection properties for delegation of access to GCP
 // resources.
 message CloudResourceProperties {
diff --git a/packages/google-cloud-bigquery-connection/protos/protos.d.ts b/packages/google-cloud-bigquery-connection/protos/protos.d.ts
index bd65a71c8c0..1e1bdaa2278 100644
--- a/packages/google-cloud-bigquery-connection/protos/protos.d.ts
+++ b/packages/google-cloud-bigquery-connection/protos/protos.d.ts
@@ -821,6 +821,9 @@ export namespace google {
                         /** Connection aws */
                         aws?: (google.cloud.bigquery.connection.v1.IAwsProperties|null);
 
+                        /** Connection azure */
+                        azure?: (google.cloud.bigquery.connection.v1.IAzureProperties|null);
+
                         /** Connection cloudSpanner */
                         cloudSpanner?: (google.cloud.bigquery.connection.v1.ICloudSpannerProperties|null);
 
@@ -861,6 +864,9 @@ export namespace google {
                         /** Connection aws. */
                         public aws?: (google.cloud.bigquery.connection.v1.IAwsProperties|null);
 
+                        /** Connection azure. */
+                        public azure?: (google.cloud.bigquery.connection.v1.IAzureProperties|null);
+
                         /** Connection cloudSpanner. */
                         public cloudSpanner?: (google.cloud.bigquery.connection.v1.ICloudSpannerProperties|null);
 
@@ -877,7 +883,7 @@ export namespace google {
                         public hasCredential: boolean;
 
                         /** Connection properties. */
-                        public properties?: ("cloudSql"|"aws"|"cloudSpanner"|"cloudResource");
+                        public properties?: ("cloudSql"|"aws"|"azure"|"cloudSpanner"|"cloudResource");
 
                         /**
                          * Creates a new Connection instance using the specified properties.
@@ -964,6 +970,9 @@ export namespace google {
 
                         /** CloudSqlProperties credential */
                         credential?: (google.cloud.bigquery.connection.v1.ICloudSqlCredential|null);
+
+                        /** CloudSqlProperties serviceAccountId */
+                        serviceAccountId?: (string|null);
                     }
 
                     /** Represents a CloudSqlProperties. */
@@ -987,6 +996,9 @@ export namespace google {
                         /** CloudSqlProperties credential. */
                         public credential?: (google.cloud.bigquery.connection.v1.ICloudSqlCredential|null);
 
+                        /** CloudSqlProperties serviceAccountId. */
+                        public serviceAccountId: string;
+
                         /**
                          * Creates a new CloudSqlProperties instance using the specified properties.
                          * @param [properties] Properties to set
@@ -1557,6 +1569,132 @@ export namespace google {
                         public toJSON(): { [k: string]: any };
                     }
 
+                    /** Properties of an AzureProperties. */
+                    interface IAzureProperties {
+
+                        /** AzureProperties application */
+                        application?: (string|null);
+
+                        /** AzureProperties clientId */
+                        clientId?: (string|null);
+
+                        /** AzureProperties objectId */
+                        objectId?: (string|null);
+
+                        /** AzureProperties customerTenantId */
+                        customerTenantId?: (string|null);
+
+                        /** AzureProperties redirectUri */
+                        redirectUri?: (string|null);
+
+                        /** AzureProperties federatedApplicationClientId */
+                        federatedApplicationClientId?: (string|null);
+
+                        /** AzureProperties identity */
+                        identity?: (string|null);
+                    }
+
+                    /** Represents an AzureProperties. */
+                    class AzureProperties implements IAzureProperties {
+
+                        /**
+                         * Constructs a new AzureProperties.
+                         * @param [properties] Properties to set
+                         */
+                        constructor(properties?: google.cloud.bigquery.connection.v1.IAzureProperties);
+
+                        /** AzureProperties application. */
+                        public application: string;
+
+                        /** AzureProperties clientId. */
+                        public clientId: string;
+
+                        /** AzureProperties objectId. */
+                        public objectId: string;
+
+                        /** AzureProperties customerTenantId. */
+                        public customerTenantId: string;
+
+                        /** AzureProperties redirectUri. */
+                        public redirectUri: string;
+
+                        /** AzureProperties federatedApplicationClientId. */
+                        public federatedApplicationClientId: string;
+
+                        /** AzureProperties identity. */
+                        public identity: string;
+
+                        /**
+                         * Creates a new AzureProperties instance using the specified properties.
+                         * @param [properties] Properties to set
+                         * @returns AzureProperties instance
+                         */
+                        public static create(properties?: google.cloud.bigquery.connection.v1.IAzureProperties): google.cloud.bigquery.connection.v1.AzureProperties;
+
+                        /**
+                         * Encodes the specified AzureProperties message. Does not implicitly {@link google.cloud.bigquery.connection.v1.AzureProperties.verify|verify} messages.
+                         * @param message AzureProperties message or plain object to encode
+                         * @param [writer] Writer to encode to
+                         * @returns Writer
+                         */
+                        public static encode(message: google.cloud.bigquery.connection.v1.IAzureProperties, writer?: $protobuf.Writer): $protobuf.Writer;
+
+                        /**
+                         * Encodes the specified AzureProperties message, length delimited. Does not implicitly {@link google.cloud.bigquery.connection.v1.AzureProperties.verify|verify} messages.
+                         * @param message AzureProperties message or plain object to encode
+                         * @param [writer] Writer to encode to
+                         * @returns Writer
+                         */
+                        public static encodeDelimited(message: google.cloud.bigquery.connection.v1.IAzureProperties, writer?: $protobuf.Writer): $protobuf.Writer;
+
+                        /**
+                         * Decodes an AzureProperties message from the specified reader or buffer.
+                         * @param reader Reader or buffer to decode from
+                         * @param [length] Message length if known beforehand
+                         * @returns AzureProperties
+                         * @throws {Error} If the payload is not a reader or valid buffer
+                         * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                         */
+                        public static decode(reader: ($protobuf.Reader|Uint8Array), length?: number): google.cloud.bigquery.connection.v1.AzureProperties;
+
+                        /**
+                         * Decodes an AzureProperties message from the specified reader or buffer, length delimited.
+                         * @param reader Reader or buffer to decode from
+                         * @returns AzureProperties
+                         * @throws {Error} If the payload is not a reader or valid buffer
+                         * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                         */
+                        public static decodeDelimited(reader: ($protobuf.Reader|Uint8Array)): google.cloud.bigquery.connection.v1.AzureProperties;
+
+                        /**
+                         * Verifies an AzureProperties message.
+                         * @param message Plain object to verify
+                         * @returns `null` if valid, otherwise the reason why it is not
+                         */
+                        public static verify(message: { [k: string]: any }): (string|null);
+
+                        /**
+                         * Creates an AzureProperties message from a plain object. Also converts values to their respective internal types.
+                         * @param object Plain object
+                         * @returns AzureProperties
+                         */
+                        public static fromObject(object: { [k: string]: any }): google.cloud.bigquery.connection.v1.AzureProperties;
+
+                        /**
+                         * Creates a plain object from an AzureProperties message. Also converts values to other types if specified.
+                         * @param message AzureProperties
+                         * @param [options] Conversion options
+                         * @returns Plain object
+                         */
+                        public static toObject(message: google.cloud.bigquery.connection.v1.AzureProperties, options?: $protobuf.IConversionOptions): { [k: string]: any };
+
+                        /**
+                         * Converts this AzureProperties to JSON.
+                         * @returns JSON object
+                         */
+                        public toJSON(): { [k: string]: any };
+                    }
+
                     /** Properties of a CloudResourceProperties. */
                     interface ICloudResourceProperties {
 
diff --git a/packages/google-cloud-bigquery-connection/protos/protos.js b/packages/google-cloud-bigquery-connection/protos/protos.js
index cb7071ab5b1..e8f229c0752 100644
--- a/packages/google-cloud-bigquery-connection/protos/protos.js
+++ b/packages/google-cloud-bigquery-connection/protos/protos.js
@@ -1701,6 +1701,7 @@
                              * @property {string|null} [description] Connection description
                              * @property {google.cloud.bigquery.connection.v1.ICloudSqlProperties|null} [cloudSql] Connection cloudSql
                              * @property {google.cloud.bigquery.connection.v1.IAwsProperties|null} [aws] Connection aws
+                             * @property {google.cloud.bigquery.connection.v1.IAzureProperties|null} [azure] Connection azure
                              * @property {google.cloud.bigquery.connection.v1.ICloudSpannerProperties|null} [cloudSpanner] Connection cloudSpanner
                              * @property {google.cloud.bigquery.connection.v1.ICloudResourceProperties|null} [cloudResource] Connection cloudResource
                              * @property {number|Long|null} [creationTime] Connection creationTime
@@ -1763,6 +1764,14 @@
                              */
                             Connection.prototype.aws = null;
     
+                            /**
+                             * Connection azure.
+                             * @member {google.cloud.bigquery.connection.v1.IAzureProperties|null|undefined} azure
+                             * @memberof google.cloud.bigquery.connection.v1.Connection
+                             * @instance
+                             */
+                            Connection.prototype.azure = null;
+    
                             /**
                              * Connection cloudSpanner.
                              * @member {google.cloud.bigquery.connection.v1.ICloudSpannerProperties|null|undefined} cloudSpanner
@@ -1808,12 +1817,12 @@
     
                             /**
                              * Connection properties.
-                             * @member {"cloudSql"|"aws"|"cloudSpanner"|"cloudResource"|undefined} properties
+                             * @member {"cloudSql"|"aws"|"azure"|"cloudSpanner"|"cloudResource"|undefined} properties
                              * @memberof google.cloud.bigquery.connection.v1.Connection
                              * @instance
                              */
                             Object.defineProperty(Connection.prototype, "properties", {
-                                get: $util.oneOfGetter($oneOfFields = ["cloudSql", "aws", "cloudSpanner", "cloudResource"]),
+                                get: $util.oneOfGetter($oneOfFields = ["cloudSql", "aws", "azure", "cloudSpanner", "cloudResource"]),
                                 set: $util.oneOfSetter($oneOfFields)
                             });
     
@@ -1857,6 +1866,8 @@
                                     writer.uint32(/* id 7, wireType 0 =*/56).bool(message.hasCredential);
                                 if (message.aws != null && Object.hasOwnProperty.call(message, "aws"))
                                     $root.google.cloud.bigquery.connection.v1.AwsProperties.encode(message.aws, writer.uint32(/* id 8, wireType 2 =*/66).fork()).ldelim();
+                                if (message.azure != null && Object.hasOwnProperty.call(message, "azure"))
+                                    $root.google.cloud.bigquery.connection.v1.AzureProperties.encode(message.azure, writer.uint32(/* id 11, wireType 2 =*/90).fork()).ldelim();
                                 if (message.cloudSpanner != null && Object.hasOwnProperty.call(message, "cloudSpanner"))
                                     $root.google.cloud.bigquery.connection.v1.CloudSpannerProperties.encode(message.cloudSpanner, writer.uint32(/* id 21, wireType 2 =*/170).fork()).ldelim();
                                 if (message.cloudResource != null && Object.hasOwnProperty.call(message, "cloudResource"))
@@ -1910,6 +1921,9 @@
                                     case 8:
                                         message.aws = $root.google.cloud.bigquery.connection.v1.AwsProperties.decode(reader, reader.uint32());
                                         break;
+                                    case 11:
+                                        message.azure = $root.google.cloud.bigquery.connection.v1.AzureProperties.decode(reader, reader.uint32());
+                                        break;
                                     case 21:
                                         message.cloudSpanner = $root.google.cloud.bigquery.connection.v1.CloudSpannerProperties.decode(reader, reader.uint32());
                                         break;
@@ -1988,6 +2002,16 @@
                                             return "aws." + error;
                                     }
                                 }
+                                if (message.azure != null && message.hasOwnProperty("azure")) {
+                                    if (properties.properties === 1)
+                                        return "properties: multiple values";
+                                    properties.properties = 1;
+                                    {
+                                        var error = $root.google.cloud.bigquery.connection.v1.AzureProperties.verify(message.azure);
+                                        if (error)
+                                            return "azure." + error;
+                                    }
+                                }
                                 if (message.cloudSpanner != null && message.hasOwnProperty("cloudSpanner")) {
                                     if (properties.properties === 1)
                                         return "properties: multiple values";
@@ -2048,6 +2072,11 @@
                                         throw TypeError(".google.cloud.bigquery.connection.v1.Connection.aws: object expected");
                                     message.aws = $root.google.cloud.bigquery.connection.v1.AwsProperties.fromObject(object.aws);
                                 }
+                                if (object.azure != null) {
+                                    if (typeof object.azure !== "object")
+                                        throw TypeError(".google.cloud.bigquery.connection.v1.Connection.azure: object expected");
+                                    message.azure = $root.google.cloud.bigquery.connection.v1.AzureProperties.fromObject(object.azure);
+                                }
                                 if (object.cloudSpanner != null) {
                                     if (typeof object.cloudSpanner !== "object")
                                         throw TypeError(".google.cloud.bigquery.connection.v1.Connection.cloudSpanner: object expected");
@@ -2138,6 +2167,11 @@
                                     if (options.oneofs)
                                         object.properties = "aws";
                                 }
+                                if (message.azure != null && message.hasOwnProperty("azure")) {
+                                    object.azure = $root.google.cloud.bigquery.connection.v1.AzureProperties.toObject(message.azure, options);
+                                    if (options.oneofs)
+                                        object.properties = "azure";
+                                }
                                 if (message.cloudSpanner != null && message.hasOwnProperty("cloudSpanner")) {
                                     object.cloudSpanner = $root.google.cloud.bigquery.connection.v1.CloudSpannerProperties.toObject(message.cloudSpanner, options);
                                     if (options.oneofs)
@@ -2175,6 +2209,7 @@
                              * @property {string|null} [database] CloudSqlProperties database
                              * @property {google.cloud.bigquery.connection.v1.CloudSqlProperties.DatabaseType|null} [type] CloudSqlProperties type
                              * @property {google.cloud.bigquery.connection.v1.ICloudSqlCredential|null} [credential] CloudSqlProperties credential
+                             * @property {string|null} [serviceAccountId] CloudSqlProperties serviceAccountId
                              */
     
                             /**
@@ -2224,6 +2259,14 @@
                              */
                             CloudSqlProperties.prototype.credential = null;
     
+                            /**
+                             * CloudSqlProperties serviceAccountId.
+                             * @member {string} serviceAccountId
+                             * @memberof google.cloud.bigquery.connection.v1.CloudSqlProperties
+                             * @instance
+                             */
+                            CloudSqlProperties.prototype.serviceAccountId = "";
+    
                             /**
                              * Creates a new CloudSqlProperties instance using the specified properties.
                              * @function create
@@ -2256,6 +2299,8 @@
                                     writer.uint32(/* id 3, wireType 0 =*/24).int32(message.type);
                                 if (message.credential != null && Object.hasOwnProperty.call(message, "credential"))
                                     $root.google.cloud.bigquery.connection.v1.CloudSqlCredential.encode(message.credential, writer.uint32(/* id 4, wireType 2 =*/34).fork()).ldelim();
+                                if (message.serviceAccountId != null && Object.hasOwnProperty.call(message, "serviceAccountId"))
+                                    writer.uint32(/* id 5, wireType 2 =*/42).string(message.serviceAccountId);
                                 return writer;
                             };
     
@@ -2302,6 +2347,9 @@
                                     case 4:
                                         message.credential = $root.google.cloud.bigquery.connection.v1.CloudSqlCredential.decode(reader, reader.uint32());
                                         break;
+                                    case 5:
+                                        message.serviceAccountId = reader.string();
+                                        break;
                                     default:
                                         reader.skipType(tag & 7);
                                         break;
@@ -2357,6 +2405,9 @@
                                     if (error)
                                         return "credential." + error;
                                 }
+                                if (message.serviceAccountId != null && message.hasOwnProperty("serviceAccountId"))
+                                    if (!$util.isString(message.serviceAccountId))
+                                        return "serviceAccountId: string expected";
                                 return null;
                             };
     
@@ -2395,6 +2446,8 @@
                                         throw TypeError(".google.cloud.bigquery.connection.v1.CloudSqlProperties.credential: object expected");
                                     message.credential = $root.google.cloud.bigquery.connection.v1.CloudSqlCredential.fromObject(object.credential);
                                 }
+                                if (object.serviceAccountId != null)
+                                    message.serviceAccountId = String(object.serviceAccountId);
                                 return message;
                             };
     
@@ -2416,6 +2469,7 @@
                                     object.database = "";
                                     object.type = options.enums === String ? "DATABASE_TYPE_UNSPECIFIED" : 0;
                                     object.credential = null;
+                                    object.serviceAccountId = "";
                                 }
                                 if (message.instanceId != null && message.hasOwnProperty("instanceId"))
                                     object.instanceId = message.instanceId;
@@ -2425,6 +2479,8 @@
                                     object.type = options.enums === String ? $root.google.cloud.bigquery.connection.v1.CloudSqlProperties.DatabaseType[message.type] : message.type;
                                 if (message.credential != null && message.hasOwnProperty("credential"))
                                     object.credential = $root.google.cloud.bigquery.connection.v1.CloudSqlCredential.toObject(message.credential, options);
+                                if (message.serviceAccountId != null && message.hasOwnProperty("serviceAccountId"))
+                                    object.serviceAccountId = message.serviceAccountId;
                                 return object;
                             };
     
@@ -3565,6 +3621,326 @@
                             return AwsAccessRole;
                         })();
     
+                        v1.AzureProperties = (function() {
+    
+                            /**
+                             * Properties of an AzureProperties.
+                             * @memberof google.cloud.bigquery.connection.v1
+                             * @interface IAzureProperties
+                             * @property {string|null} [application] AzureProperties application
+                             * @property {string|null} [clientId] AzureProperties clientId
+                             * @property {string|null} [objectId] AzureProperties objectId
+                             * @property {string|null} [customerTenantId] AzureProperties customerTenantId
+                             * @property {string|null} [redirectUri] AzureProperties redirectUri
+                             * @property {string|null} [federatedApplicationClientId] AzureProperties federatedApplicationClientId
+                             * @property {string|null} [identity] AzureProperties identity
+                             */
+    
+                            /**
+                             * Constructs a new AzureProperties.
+                             * @memberof google.cloud.bigquery.connection.v1
+                             * @classdesc Represents an AzureProperties.
+                             * @implements IAzureProperties
+                             * @constructor
+                             * @param {google.cloud.bigquery.connection.v1.IAzureProperties=} [properties] Properties to set
+                             */
+                            function AzureProperties(properties) {
+                                if (properties)
+                                    for (var keys = Object.keys(properties), i = 0; i < keys.length; ++i)
+                                        if (properties[keys[i]] != null)
+                                            this[keys[i]] = properties[keys[i]];
+                            }
+    
+                            /**
+                             * AzureProperties application.
+                             * @member {string} application
+                             * @memberof google.cloud.bigquery.connection.v1.AzureProperties
+                             * @instance
+                             */
+                            AzureProperties.prototype.application = "";
+    
+                            /**
+                             * AzureProperties clientId.
+                             * @member {string} clientId
+                             * @memberof google.cloud.bigquery.connection.v1.AzureProperties
+                             * @instance
+                             */
+                            AzureProperties.prototype.clientId = "";
+    
+                            /**
+                             * AzureProperties objectId.
+                             * @member {string} objectId
+                             * @memberof google.cloud.bigquery.connection.v1.AzureProperties
+                             * @instance
+                             */
+                            AzureProperties.prototype.objectId = "";
+    
+                            /**
+                             * AzureProperties customerTenantId.
+                             * @member {string} customerTenantId
+                             * @memberof google.cloud.bigquery.connection.v1.AzureProperties
+                             * @instance
+                             */
+                            AzureProperties.prototype.customerTenantId = "";
+    
+                            /**
+                             * AzureProperties redirectUri.
+                             * @member {string} redirectUri
+                             * @memberof google.cloud.bigquery.connection.v1.AzureProperties
+                             * @instance
+                             */
+                            AzureProperties.prototype.redirectUri = "";
+    
+                            /**
+                             * AzureProperties federatedApplicationClientId.
+                             * @member {string} federatedApplicationClientId
+                             * @memberof google.cloud.bigquery.connection.v1.AzureProperties
+                             * @instance
+                             */
+                            AzureProperties.prototype.federatedApplicationClientId = "";
+    
+                            /**
+                             * AzureProperties identity.
+                             * @member {string} identity
+                             * @memberof google.cloud.bigquery.connection.v1.AzureProperties
+                             * @instance
+                             */
+                            AzureProperties.prototype.identity = "";
+    
+                            /**
+                             * Creates a new AzureProperties instance using the specified properties.
+                             * @function create
+                             * @memberof google.cloud.bigquery.connection.v1.AzureProperties
+                             * @static
+                             * @param {google.cloud.bigquery.connection.v1.IAzureProperties=} [properties] Properties to set
+                             * @returns {google.cloud.bigquery.connection.v1.AzureProperties} AzureProperties instance
+                             */
+                            AzureProperties.create = function create(properties) {
+                                return new AzureProperties(properties);
+                            };
+    
+                            /**
+                             * Encodes the specified AzureProperties message. Does not implicitly {@link google.cloud.bigquery.connection.v1.AzureProperties.verify|verify} messages.
+                             * @function encode
+                             * @memberof google.cloud.bigquery.connection.v1.AzureProperties
+                             * @static
+                             * @param {google.cloud.bigquery.connection.v1.IAzureProperties} message AzureProperties message or plain object to encode
+                             * @param {$protobuf.Writer} [writer] Writer to encode to
+                             * @returns {$protobuf.Writer} Writer
+                             */
+                            AzureProperties.encode = function encode(message, writer) {
+                                if (!writer)
+                                    writer = $Writer.create();
+                                if (message.application != null && Object.hasOwnProperty.call(message, "application"))
+                                    writer.uint32(/* id 1, wireType 2 =*/10).string(message.application);
+                                if (message.clientId != null && Object.hasOwnProperty.call(message, "clientId"))
+                                    writer.uint32(/* id 2, wireType 2 =*/18).string(message.clientId);
+                                if (message.objectId != null && Object.hasOwnProperty.call(message, "objectId"))
+                                    writer.uint32(/* id 3, wireType 2 =*/26).string(message.objectId);
+                                if (message.customerTenantId != null && Object.hasOwnProperty.call(message, "customerTenantId"))
+                                    writer.uint32(/* id 4, wireType 2 =*/34).string(message.customerTenantId);
+                                if (message.redirectUri != null && Object.hasOwnProperty.call(message, "redirectUri"))
+                                    writer.uint32(/* id 5, wireType 2 =*/42).string(message.redirectUri);
+                                if (message.federatedApplicationClientId != null && Object.hasOwnProperty.call(message, "federatedApplicationClientId"))
+                                    writer.uint32(/* id 6, wireType 2 =*/50).string(message.federatedApplicationClientId);
+                                if (message.identity != null && Object.hasOwnProperty.call(message, "identity"))
+                                    writer.uint32(/* id 7, wireType 2 =*/58).string(message.identity);
+                                return writer;
+                            };
+    
+                            /**
+                             * Encodes the specified AzureProperties message, length delimited. Does not implicitly {@link google.cloud.bigquery.connection.v1.AzureProperties.verify|verify} messages.
+                             * @function encodeDelimited
+                             * @memberof google.cloud.bigquery.connection.v1.AzureProperties
+                             * @static
+                             * @param {google.cloud.bigquery.connection.v1.IAzureProperties} message AzureProperties message or plain object to encode
+                             * @param {$protobuf.Writer} [writer] Writer to encode to
+                             * @returns {$protobuf.Writer} Writer
+                             */
+                            AzureProperties.encodeDelimited = function encodeDelimited(message, writer) {
+                                return this.encode(message, writer).ldelim();
+                            };
+    
+                            /**
+                             * Decodes an AzureProperties message from the specified reader or buffer.
+                             * @function decode
+                             * @memberof google.cloud.bigquery.connection.v1.AzureProperties
+                             * @static
+                             * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
+                             * @param {number} [length] Message length if known beforehand
+                             * @returns {google.cloud.bigquery.connection.v1.AzureProperties} AzureProperties
+                             * @throws {Error} If the payload is not a reader or valid buffer
+                             * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                             */
+                            AzureProperties.decode = function decode(reader, length) {
+                                if (!(reader instanceof $Reader))
+                                    reader = $Reader.create(reader);
+                                var end = length === undefined ? reader.len : reader.pos + length, message = new $root.google.cloud.bigquery.connection.v1.AzureProperties();
+                                while (reader.pos < end) {
+                                    var tag = reader.uint32();
+                                    switch (tag >>> 3) {
+                                    case 1:
+                                        message.application = reader.string();
+                                        break;
+                                    case 2:
+                                        message.clientId = reader.string();
+                                        break;
+                                    case 3:
+                                        message.objectId = reader.string();
+                                        break;
+                                    case 4:
+                                        message.customerTenantId = reader.string();
+                                        break;
+                                    case 5:
+                                        message.redirectUri = reader.string();
+                                        break;
+                                    case 6:
+                                        message.federatedApplicationClientId = reader.string();
+                                        break;
+                                    case 7:
+                                        message.identity = reader.string();
+                                        break;
+                                    default:
+                                        reader.skipType(tag & 7);
+                                        break;
+                                    }
+                                }
+                                return message;
+                            };
+    
+                            /**
+                             * Decodes an AzureProperties message from the specified reader or buffer, length delimited.
+                             * @function decodeDelimited
+                             * @memberof google.cloud.bigquery.connection.v1.AzureProperties
+                             * @static
+                             * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
+                             * @returns {google.cloud.bigquery.connection.v1.AzureProperties} AzureProperties
+                             * @throws {Error} If the payload is not a reader or valid buffer
+                             * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                             */
+                            AzureProperties.decodeDelimited = function decodeDelimited(reader) {
+                                if (!(reader instanceof $Reader))
+                                    reader = new $Reader(reader);
+                                return this.decode(reader, reader.uint32());
+                            };
+    
+                            /**
+                             * Verifies an AzureProperties message.
+                             * @function verify
+                             * @memberof google.cloud.bigquery.connection.v1.AzureProperties
+                             * @static
+                             * @param {Object.<string,*>} message Plain object to verify
+                             * @returns {string|null} `null` if valid, otherwise the reason why it is not
+                             */
+                            AzureProperties.verify = function verify(message) {
+                                if (typeof message !== "object" || message === null)
+                                    return "object expected";
+                                if (message.application != null && message.hasOwnProperty("application"))
+                                    if (!$util.isString(message.application))
+                                        return "application: string expected";
+                                if (message.clientId != null && message.hasOwnProperty("clientId"))
+                                    if (!$util.isString(message.clientId))
+                                        return "clientId: string expected";
+                                if (message.objectId != null && message.hasOwnProperty("objectId"))
+                                    if (!$util.isString(message.objectId))
+                                        return "objectId: string expected";
+                                if (message.customerTenantId != null && message.hasOwnProperty("customerTenantId"))
+                                    if (!$util.isString(message.customerTenantId))
+                                        return "customerTenantId: string expected";
+                                if (message.redirectUri != null && message.hasOwnProperty("redirectUri"))
+                                    if (!$util.isString(message.redirectUri))
+                                        return "redirectUri: string expected";
+                                if (message.federatedApplicationClientId != null && message.hasOwnProperty("federatedApplicationClientId"))
+                                    if (!$util.isString(message.federatedApplicationClientId))
+                                        return "federatedApplicationClientId: string expected";
+                                if (message.identity != null && message.hasOwnProperty("identity"))
+                                    if (!$util.isString(message.identity))
+                                        return "identity: string expected";
+                                return null;
+                            };
+    
+                            /**
+                             * Creates an AzureProperties message from a plain object. Also converts values to their respective internal types.
+                             * @function fromObject
+                             * @memberof google.cloud.bigquery.connection.v1.AzureProperties
+                             * @static
+                             * @param {Object.<string,*>} object Plain object
+                             * @returns {google.cloud.bigquery.connection.v1.AzureProperties} AzureProperties
+                             */
+                            AzureProperties.fromObject = function fromObject(object) {
+                                if (object instanceof $root.google.cloud.bigquery.connection.v1.AzureProperties)
+                                    return object;
+                                var message = new $root.google.cloud.bigquery.connection.v1.AzureProperties();
+                                if (object.application != null)
+                                    message.application = String(object.application);
+                                if (object.clientId != null)
+                                    message.clientId = String(object.clientId);
+                                if (object.objectId != null)
+                                    message.objectId = String(object.objectId);
+                                if (object.customerTenantId != null)
+                                    message.customerTenantId = String(object.customerTenantId);
+                                if (object.redirectUri != null)
+                                    message.redirectUri = String(object.redirectUri);
+                                if (object.federatedApplicationClientId != null)
+                                    message.federatedApplicationClientId = String(object.federatedApplicationClientId);
+                                if (object.identity != null)
+                                    message.identity = String(object.identity);
+                                return message;
+                            };
+    
+                            /**
+                             * Creates a plain object from an AzureProperties message. Also converts values to other types if specified.
+                             * @function toObject
+                             * @memberof google.cloud.bigquery.connection.v1.AzureProperties
+                             * @static
+                             * @param {google.cloud.bigquery.connection.v1.AzureProperties} message AzureProperties
+                             * @param {$protobuf.IConversionOptions} [options] Conversion options
+                             * @returns {Object.<string,*>} Plain object
+                             */
+                            AzureProperties.toObject = function toObject(message, options) {
+                                if (!options)
+                                    options = {};
+                                var object = {};
+                                if (options.defaults) {
+                                    object.application = "";
+                                    object.clientId = "";
+                                    object.objectId = "";
+                                    object.customerTenantId = "";
+                                    object.redirectUri = "";
+                                    object.federatedApplicationClientId = "";
+                                    object.identity = "";
+                                }
+                                if (message.application != null && message.hasOwnProperty("application"))
+                                    object.application = message.application;
+                                if (message.clientId != null && message.hasOwnProperty("clientId"))
+                                    object.clientId = message.clientId;
+                                if (message.objectId != null && message.hasOwnProperty("objectId"))
+                                    object.objectId = message.objectId;
+                                if (message.customerTenantId != null && message.hasOwnProperty("customerTenantId"))
+                                    object.customerTenantId = message.customerTenantId;
+                                if (message.redirectUri != null && message.hasOwnProperty("redirectUri"))
+                                    object.redirectUri = message.redirectUri;
+                                if (message.federatedApplicationClientId != null && message.hasOwnProperty("federatedApplicationClientId"))
+                                    object.federatedApplicationClientId = message.federatedApplicationClientId;
+                                if (message.identity != null && message.hasOwnProperty("identity"))
+                                    object.identity = message.identity;
+                                return object;
+                            };
+    
+                            /**
+                             * Converts this AzureProperties to JSON.
+                             * @function toJSON
+                             * @memberof google.cloud.bigquery.connection.v1.AzureProperties
+                             * @instance
+                             * @returns {Object.<string,*>} JSON object
+                             */
+                            AzureProperties.prototype.toJSON = function toJSON() {
+                                return this.constructor.toObject(this, $protobuf.util.toJSONOptions);
+                            };
+    
+                            return AzureProperties;
+                        })();
+    
                         v1.CloudResourceProperties = (function() {
     
                             /**
diff --git a/packages/google-cloud-bigquery-connection/protos/protos.json b/packages/google-cloud-bigquery-connection/protos/protos.json
index e62ecac0666..db54f2aa682 100644
--- a/packages/google-cloud-bigquery-connection/protos/protos.json
+++ b/packages/google-cloud-bigquery-connection/protos/protos.json
@@ -301,6 +301,7 @@
                               "oneof": [
                                 "cloudSql",
                                 "aws",
+                                "azure",
                                 "cloudSpanner",
                                 "cloudResource"
                               ]
@@ -327,6 +328,10 @@
                               "type": "AwsProperties",
                               "id": 8
                             },
+                            "azure": {
+                              "type": "AzureProperties",
+                              "id": 11
+                            },
                             "cloudSpanner": {
                               "type": "CloudSpannerProperties",
                               "id": 21
@@ -378,6 +383,13 @@
                               "options": {
                                 "(google.api.field_behavior)": "INPUT_ONLY"
                               }
+                            },
+                            "serviceAccountId": {
+                              "type": "string",
+                              "id": 5,
+                              "options": {
+                                "(google.api.field_behavior)": "OUTPUT_ONLY"
+                              }
                             }
                           },
                           "nested": {
@@ -426,7 +438,10 @@
                           "fields": {
                             "crossAccountRole": {
                               "type": "AwsCrossAccountRole",
-                              "id": 2
+                              "id": 2,
+                              "options": {
+                                "deprecated": true
+                              }
                             },
                             "accessRole": {
                               "type": "AwsAccessRole",
@@ -468,6 +483,50 @@
                             }
                           }
                         },
+                        "AzureProperties": {
+                          "fields": {
+                            "application": {
+                              "type": "string",
+                              "id": 1,
+                              "options": {
+                                "(google.api.field_behavior)": "OUTPUT_ONLY"
+                              }
+                            },
+                            "clientId": {
+                              "type": "string",
+                              "id": 2,
+                              "options": {
+                                "(google.api.field_behavior)": "OUTPUT_ONLY"
+                              }
+                            },
+                            "objectId": {
+                              "type": "string",
+                              "id": 3,
+                              "options": {
+                                "(google.api.field_behavior)": "OUTPUT_ONLY"
+                              }
+                            },
+                            "customerTenantId": {
+                              "type": "string",
+                              "id": 4
+                            },
+                            "redirectUri": {
+                              "type": "string",
+                              "id": 5
+                            },
+                            "federatedApplicationClientId": {
+                              "type": "string",
+                              "id": 6
+                            },
+                            "identity": {
+                              "type": "string",
+                              "id": 7,
+                              "options": {
+                                "(google.api.field_behavior)": "OUTPUT_ONLY"
+                              }
+                            }
+                          }
+                        },
                         "CloudResourceProperties": {
                           "fields": {
                             "serviceAccountId": {
diff --git a/packages/google-cloud-bigquery-connection/samples/generated/v1/connection_service.create_connection.js b/packages/google-cloud-bigquery-connection/samples/generated/v1/connection_service.create_connection.js
index 6a163d840bc..8ac35d5fb73 100644
--- a/packages/google-cloud-bigquery-connection/samples/generated/v1/connection_service.create_connection.js
+++ b/packages/google-cloud-bigquery-connection/samples/generated/v1/connection_service.create_connection.js
@@ -23,6 +23,9 @@
 function main(parent, connection) {
   // [START bigqueryconnection_v1_generated_ConnectionService_CreateConnection_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**
diff --git a/packages/google-cloud-bigquery-connection/samples/generated/v1/connection_service.delete_connection.js b/packages/google-cloud-bigquery-connection/samples/generated/v1/connection_service.delete_connection.js
index 6847bb3a423..43360021887 100644
--- a/packages/google-cloud-bigquery-connection/samples/generated/v1/connection_service.delete_connection.js
+++ b/packages/google-cloud-bigquery-connection/samples/generated/v1/connection_service.delete_connection.js
@@ -23,6 +23,9 @@
 function main(name) {
   // [START bigqueryconnection_v1_generated_ConnectionService_DeleteConnection_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**
diff --git a/packages/google-cloud-bigquery-connection/samples/generated/v1/connection_service.get_connection.js b/packages/google-cloud-bigquery-connection/samples/generated/v1/connection_service.get_connection.js
index 7d206d2573b..406f86f5245 100644
--- a/packages/google-cloud-bigquery-connection/samples/generated/v1/connection_service.get_connection.js
+++ b/packages/google-cloud-bigquery-connection/samples/generated/v1/connection_service.get_connection.js
@@ -23,6 +23,9 @@
 function main(name) {
   // [START bigqueryconnection_v1_generated_ConnectionService_GetConnection_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**
diff --git a/packages/google-cloud-bigquery-connection/samples/generated/v1/connection_service.get_iam_policy.js b/packages/google-cloud-bigquery-connection/samples/generated/v1/connection_service.get_iam_policy.js
index 1e50713dd73..cab48cb4d5f 100644
--- a/packages/google-cloud-bigquery-connection/samples/generated/v1/connection_service.get_iam_policy.js
+++ b/packages/google-cloud-bigquery-connection/samples/generated/v1/connection_service.get_iam_policy.js
@@ -23,6 +23,9 @@
 function main(resource) {
   // [START bigqueryconnection_v1_generated_ConnectionService_GetIamPolicy_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**
diff --git a/packages/google-cloud-bigquery-connection/samples/generated/v1/connection_service.list_connections.js b/packages/google-cloud-bigquery-connection/samples/generated/v1/connection_service.list_connections.js
index 40bd87fd282..56f097f062c 100644
--- a/packages/google-cloud-bigquery-connection/samples/generated/v1/connection_service.list_connections.js
+++ b/packages/google-cloud-bigquery-connection/samples/generated/v1/connection_service.list_connections.js
@@ -23,6 +23,9 @@
 function main(parent, pageSize) {
   // [START bigqueryconnection_v1_generated_ConnectionService_ListConnections_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**
diff --git a/packages/google-cloud-bigquery-connection/samples/generated/v1/connection_service.set_iam_policy.js b/packages/google-cloud-bigquery-connection/samples/generated/v1/connection_service.set_iam_policy.js
index 84ccdfb2a9a..6754edc5d4d 100644
--- a/packages/google-cloud-bigquery-connection/samples/generated/v1/connection_service.set_iam_policy.js
+++ b/packages/google-cloud-bigquery-connection/samples/generated/v1/connection_service.set_iam_policy.js
@@ -23,6 +23,9 @@
 function main(resource, policy) {
   // [START bigqueryconnection_v1_generated_ConnectionService_SetIamPolicy_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**
diff --git a/packages/google-cloud-bigquery-connection/samples/generated/v1/connection_service.test_iam_permissions.js b/packages/google-cloud-bigquery-connection/samples/generated/v1/connection_service.test_iam_permissions.js
index 5d523c88d4e..985ddc86c48 100644
--- a/packages/google-cloud-bigquery-connection/samples/generated/v1/connection_service.test_iam_permissions.js
+++ b/packages/google-cloud-bigquery-connection/samples/generated/v1/connection_service.test_iam_permissions.js
@@ -23,6 +23,9 @@
 function main(resource, permissions) {
   // [START bigqueryconnection_v1_generated_ConnectionService_TestIamPermissions_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**
diff --git a/packages/google-cloud-bigquery-connection/samples/generated/v1/connection_service.update_connection.js b/packages/google-cloud-bigquery-connection/samples/generated/v1/connection_service.update_connection.js
index f485ebe8200..59630d9b3c0 100644
--- a/packages/google-cloud-bigquery-connection/samples/generated/v1/connection_service.update_connection.js
+++ b/packages/google-cloud-bigquery-connection/samples/generated/v1/connection_service.update_connection.js
@@ -23,6 +23,9 @@
 function main(name, connection, updateMask) {
   // [START bigqueryconnection_v1_generated_ConnectionService_UpdateConnection_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**
diff --git a/packages/google-cloud-bigquery-connection/samples/generated/v1/snippet_metadata.google.cloud.bigquery.connection.v1.json b/packages/google-cloud-bigquery-connection/samples/generated/v1/snippet_metadata.google.cloud.bigquery.connection.v1.json
index d507a052934..cf0737b4655 100644
--- a/packages/google-cloud-bigquery-connection/samples/generated/v1/snippet_metadata.google.cloud.bigquery.connection.v1.json
+++ b/packages/google-cloud-bigquery-connection/samples/generated/v1/snippet_metadata.google.cloud.bigquery.connection.v1.json
@@ -22,7 +22,7 @@
             "segments": [
                 {
                     "start": 25,
-                    "end": 60,
+                    "end": 63,
                     "type": "FULL"
                 }
             ],
@@ -70,7 +70,7 @@
             "segments": [
                 {
                     "start": 25,
-                    "end": 51,
+                    "end": 54,
                     "type": "FULL"
                 }
             ],
@@ -110,7 +110,7 @@
             "segments": [
                 {
                     "start": 25,
-                    "end": 62,
+                    "end": 65,
                     "type": "FULL"
                 }
             ],
@@ -158,7 +158,7 @@
             "segments": [
                 {
                     "start": 25,
-                    "end": 61,
+                    "end": 64,
                     "type": "FULL"
                 }
             ],
@@ -206,7 +206,7 @@
             "segments": [
                 {
                     "start": 25,
-                    "end": 51,
+                    "end": 54,
                     "type": "FULL"
                 }
             ],
@@ -246,7 +246,7 @@
             "segments": [
                 {
                     "start": 25,
-                    "end": 56,
+                    "end": 59,
                     "type": "FULL"
                 }
             ],
@@ -290,7 +290,7 @@
             "segments": [
                 {
                     "start": 25,
-                    "end": 66,
+                    "end": 69,
                     "type": "FULL"
                 }
             ],
@@ -338,7 +338,7 @@
             "segments": [
                 {
                     "start": 25,
-                    "end": 59,
+                    "end": 62,
                     "type": "FULL"
                 }
             ],
diff --git a/packages/google-cloud-bigquery-connection/src/v1/connection_service_client.ts b/packages/google-cloud-bigquery-connection/src/v1/connection_service_client.ts
index 177b90854b7..e2e4db59687 100644
--- a/packages/google-cloud-bigquery-connection/src/v1/connection_service_client.ts
+++ b/packages/google-cloud-bigquery-connection/src/v1/connection_service_client.ts
@@ -28,7 +28,6 @@ import {
 } from 'google-gax';
 
 import {Transform} from 'stream';
-import {RequestType} from 'google-gax/build/src/apitypes';
 import * as protos from '../../protos/protos';
 import jsonProtos = require('../../protos/protos.json');
 /**
@@ -261,7 +260,8 @@ export class ConnectionServiceClient {
       const apiCall = this._gaxModule.createApiCall(
         callPromise,
         this._defaults[methodName],
-        descriptor
+        descriptor,
+        this._opts.fallback
       );
 
       this.innerApiCalls[methodName] = apiCall;
@@ -1149,7 +1149,7 @@ export class ConnectionServiceClient {
     const callSettings = defaultCallSettings.merge(options);
     this.initialize();
     return this.descriptors.page.listConnections.createStream(
-      this.innerApiCalls.listConnections as gax.GaxCall,
+      this.innerApiCalls.listConnections as GaxCall,
       request,
       callSettings
     );
@@ -1198,7 +1198,7 @@ export class ConnectionServiceClient {
     this.initialize();
     return this.descriptors.page.listConnections.asyncIterate(
       this.innerApiCalls['listConnections'] as GaxCall,
-      request as unknown as RequestType,
+      request as {},
       callSettings
     ) as AsyncIterable<protos.google.cloud.bigquery.connection.v1.IConnection>;
   }
diff --git a/packages/google-cloud-bigquery-connection/test/gapic_connection_service_v1.ts b/packages/google-cloud-bigquery-connection/test/gapic_connection_service_v1.ts
index c5ebcd130ca..ce69d131deb 100644
--- a/packages/google-cloud-bigquery-connection/test/gapic_connection_service_v1.ts
+++ b/packages/google-cloud-bigquery-connection/test/gapic_connection_service_v1.ts
@@ -113,101 +113,103 @@ function stubAsyncIterationCall<ResponseType>(
 }
 
 describe('v1.ConnectionServiceClient', () => {
-  it('has servicePath', () => {
-    const servicePath =
-      connectionserviceModule.v1.ConnectionServiceClient.servicePath;
-    assert(servicePath);
-  });
-
-  it('has apiEndpoint', () => {
-    const apiEndpoint =
-      connectionserviceModule.v1.ConnectionServiceClient.apiEndpoint;
-    assert(apiEndpoint);
-  });
-
-  it('has port', () => {
-    const port = connectionserviceModule.v1.ConnectionServiceClient.port;
-    assert(port);
-    assert(typeof port === 'number');
-  });
-
-  it('should create a client with no option', () => {
-    const client = new connectionserviceModule.v1.ConnectionServiceClient();
-    assert(client);
-  });
+  describe('Common methods', () => {
+    it('has servicePath', () => {
+      const servicePath =
+        connectionserviceModule.v1.ConnectionServiceClient.servicePath;
+      assert(servicePath);
+    });
 
-  it('should create a client with gRPC fallback', () => {
-    const client = new connectionserviceModule.v1.ConnectionServiceClient({
-      fallback: true,
+    it('has apiEndpoint', () => {
+      const apiEndpoint =
+        connectionserviceModule.v1.ConnectionServiceClient.apiEndpoint;
+      assert(apiEndpoint);
     });
-    assert(client);
-  });
 
-  it('has initialize method and supports deferred initialization', async () => {
-    const client = new connectionserviceModule.v1.ConnectionServiceClient({
-      credentials: {client_email: 'bogus', private_key: 'bogus'},
-      projectId: 'bogus',
+    it('has port', () => {
+      const port = connectionserviceModule.v1.ConnectionServiceClient.port;
+      assert(port);
+      assert(typeof port === 'number');
     });
-    assert.strictEqual(client.connectionServiceStub, undefined);
-    await client.initialize();
-    assert(client.connectionServiceStub);
-  });
 
-  it('has close method for the initialized client', done => {
-    const client = new connectionserviceModule.v1.ConnectionServiceClient({
-      credentials: {client_email: 'bogus', private_key: 'bogus'},
-      projectId: 'bogus',
+    it('should create a client with no option', () => {
+      const client = new connectionserviceModule.v1.ConnectionServiceClient();
+      assert(client);
     });
-    client.initialize();
-    assert(client.connectionServiceStub);
-    client.close().then(() => {
-      done();
+
+    it('should create a client with gRPC fallback', () => {
+      const client = new connectionserviceModule.v1.ConnectionServiceClient({
+        fallback: true,
+      });
+      assert(client);
     });
-  });
 
-  it('has close method for the non-initialized client', done => {
-    const client = new connectionserviceModule.v1.ConnectionServiceClient({
-      credentials: {client_email: 'bogus', private_key: 'bogus'},
-      projectId: 'bogus',
+    it('has initialize method and supports deferred initialization', async () => {
+      const client = new connectionserviceModule.v1.ConnectionServiceClient({
+        credentials: {client_email: 'bogus', private_key: 'bogus'},
+        projectId: 'bogus',
+      });
+      assert.strictEqual(client.connectionServiceStub, undefined);
+      await client.initialize();
+      assert(client.connectionServiceStub);
     });
-    assert.strictEqual(client.connectionServiceStub, undefined);
-    client.close().then(() => {
-      done();
+
+    it('has close method for the initialized client', done => {
+      const client = new connectionserviceModule.v1.ConnectionServiceClient({
+        credentials: {client_email: 'bogus', private_key: 'bogus'},
+        projectId: 'bogus',
+      });
+      client.initialize();
+      assert(client.connectionServiceStub);
+      client.close().then(() => {
+        done();
+      });
     });
-  });
 
-  it('has getProjectId method', async () => {
-    const fakeProjectId = 'fake-project-id';
-    const client = new connectionserviceModule.v1.ConnectionServiceClient({
-      credentials: {client_email: 'bogus', private_key: 'bogus'},
-      projectId: 'bogus',
+    it('has close method for the non-initialized client', done => {
+      const client = new connectionserviceModule.v1.ConnectionServiceClient({
+        credentials: {client_email: 'bogus', private_key: 'bogus'},
+        projectId: 'bogus',
+      });
+      assert.strictEqual(client.connectionServiceStub, undefined);
+      client.close().then(() => {
+        done();
+      });
     });
-    client.auth.getProjectId = sinon.stub().resolves(fakeProjectId);
-    const result = await client.getProjectId();
-    assert.strictEqual(result, fakeProjectId);
-    assert((client.auth.getProjectId as SinonStub).calledWithExactly());
-  });
 
-  it('has getProjectId method with callback', async () => {
-    const fakeProjectId = 'fake-project-id';
-    const client = new connectionserviceModule.v1.ConnectionServiceClient({
-      credentials: {client_email: 'bogus', private_key: 'bogus'},
-      projectId: 'bogus',
+    it('has getProjectId method', async () => {
+      const fakeProjectId = 'fake-project-id';
+      const client = new connectionserviceModule.v1.ConnectionServiceClient({
+        credentials: {client_email: 'bogus', private_key: 'bogus'},
+        projectId: 'bogus',
+      });
+      client.auth.getProjectId = sinon.stub().resolves(fakeProjectId);
+      const result = await client.getProjectId();
+      assert.strictEqual(result, fakeProjectId);
+      assert((client.auth.getProjectId as SinonStub).calledWithExactly());
     });
-    client.auth.getProjectId = sinon
-      .stub()
-      .callsArgWith(0, null, fakeProjectId);
-    const promise = new Promise((resolve, reject) => {
-      client.getProjectId((err?: Error | null, projectId?: string | null) => {
-        if (err) {
-          reject(err);
-        } else {
-          resolve(projectId);
-        }
+
+    it('has getProjectId method with callback', async () => {
+      const fakeProjectId = 'fake-project-id';
+      const client = new connectionserviceModule.v1.ConnectionServiceClient({
+        credentials: {client_email: 'bogus', private_key: 'bogus'},
+        projectId: 'bogus',
+      });
+      client.auth.getProjectId = sinon
+        .stub()
+        .callsArgWith(0, null, fakeProjectId);
+      const promise = new Promise((resolve, reject) => {
+        client.getProjectId((err?: Error | null, projectId?: string | null) => {
+          if (err) {
+            reject(err);
+          } else {
+            resolve(projectId);
+          }
+        });
       });
+      const result = await promise;
+      assert.strictEqual(result, fakeProjectId);
     });
-    const result = await promise;
-    assert.strictEqual(result, fakeProjectId);
   });
 
   describe('createConnection', () => {