diff --git a/sdk/appplatform/arm-appplatform/src/appPlatformManagementClientContext.ts b/sdk/appplatform/arm-appplatform/src/appPlatformManagementClientContext.ts
index 6e107e7e50bf..e36bb5ab9e7c 100644
--- a/sdk/appplatform/arm-appplatform/src/appPlatformManagementClientContext.ts
+++ b/sdk/appplatform/arm-appplatform/src/appPlatformManagementClientContext.ts
@@ -37,14 +37,14 @@ export class AppPlatformManagementClientContext extends msRestAzure.AzureService
     if (!options) {
       options = {};
     }
-    if (!options.userAgent) {
+    if(!options.userAgent) {
       const defaultUserAgent = msRestAzure.getDefaultUserAgentValue();
       options.userAgent = `${packageName}/${packageVersion} ${defaultUserAgent}`;
     }
 
     super(credentials, options);
 
-    this.apiVersion = '2020-11-01-preview';
+    this.apiVersion = '2021-03-03-preview';
     this.acceptLanguage = 'en-US';
     this.longRunningOperationRetryTimeout = 30;
     this.baseUri = options.baseUri || this.baseUri || "https://management.azure.com";
@@ -52,10 +52,10 @@ export class AppPlatformManagementClientContext extends msRestAzure.AzureService
     this.credentials = credentials;
     this.subscriptionId = subscriptionId;
 
-    if (options.acceptLanguage !== null && options.acceptLanguage !== undefined) {
+    if(options.acceptLanguage !== null && options.acceptLanguage !== undefined) {
       this.acceptLanguage = options.acceptLanguage;
     }
-    if (options.longRunningOperationRetryTimeout !== null && options.longRunningOperationRetryTimeout !== undefined) {
+    if(options.longRunningOperationRetryTimeout !== null && options.longRunningOperationRetryTimeout !== undefined) {
       this.longRunningOperationRetryTimeout = options.longRunningOperationRetryTimeout;
     }
   }
diff --git a/sdk/appplatform/arm-appplatform/src/models/appsMappers.ts b/sdk/appplatform/arm-appplatform/src/models/appsMappers.ts
index 99e4dea19713..55fe77225529 100644
--- a/sdk/appplatform/arm-appplatform/src/models/appsMappers.ts
+++ b/sdk/appplatform/arm-appplatform/src/models/appsMappers.ts
@@ -41,6 +41,7 @@ export {
   ProxyResource,
   RequiredTraffic,
   Resource,
+  ResourceRequests,
   ResourceUploadDefinition,
   ServiceResource,
   Sku,
diff --git a/sdk/appplatform/arm-appplatform/src/models/bindingsMappers.ts b/sdk/appplatform/arm-appplatform/src/models/bindingsMappers.ts
index 30588e309be2..f73c445028b5 100644
--- a/sdk/appplatform/arm-appplatform/src/models/bindingsMappers.ts
+++ b/sdk/appplatform/arm-appplatform/src/models/bindingsMappers.ts
@@ -39,6 +39,7 @@ export {
   ProxyResource,
   RequiredTraffic,
   Resource,
+  ResourceRequests,
   ServiceResource,
   Sku,
   TemporaryDisk,
diff --git a/sdk/appplatform/arm-appplatform/src/models/certificatesMappers.ts b/sdk/appplatform/arm-appplatform/src/models/certificatesMappers.ts
index 74a82eb8d30a..10075b5f9ae7 100644
--- a/sdk/appplatform/arm-appplatform/src/models/certificatesMappers.ts
+++ b/sdk/appplatform/arm-appplatform/src/models/certificatesMappers.ts
@@ -39,6 +39,7 @@ export {
   ProxyResource,
   RequiredTraffic,
   Resource,
+  ResourceRequests,
   ServiceResource,
   Sku,
   TemporaryDisk,
diff --git a/sdk/appplatform/arm-appplatform/src/models/configServersMappers.ts b/sdk/appplatform/arm-appplatform/src/models/configServersMappers.ts
index a4f7578092d0..7b96627e1404 100644
--- a/sdk/appplatform/arm-appplatform/src/models/configServersMappers.ts
+++ b/sdk/appplatform/arm-appplatform/src/models/configServersMappers.ts
@@ -40,6 +40,7 @@ export {
   ProxyResource,
   RequiredTraffic,
   Resource,
+  ResourceRequests,
   ServiceResource,
   Sku,
   TemporaryDisk,
diff --git a/sdk/appplatform/arm-appplatform/src/models/customDomainsMappers.ts b/sdk/appplatform/arm-appplatform/src/models/customDomainsMappers.ts
index 02fcb4f36e3d..3fa64c93982d 100644
--- a/sdk/appplatform/arm-appplatform/src/models/customDomainsMappers.ts
+++ b/sdk/appplatform/arm-appplatform/src/models/customDomainsMappers.ts
@@ -39,6 +39,7 @@ export {
   ProxyResource,
   RequiredTraffic,
   Resource,
+  ResourceRequests,
   ServiceResource,
   Sku,
   TemporaryDisk,
diff --git a/sdk/appplatform/arm-appplatform/src/models/deploymentsMappers.ts b/sdk/appplatform/arm-appplatform/src/models/deploymentsMappers.ts
index 7414c396b7b1..16222c716764 100644
--- a/sdk/appplatform/arm-appplatform/src/models/deploymentsMappers.ts
+++ b/sdk/appplatform/arm-appplatform/src/models/deploymentsMappers.ts
@@ -40,6 +40,7 @@ export {
   ProxyResource,
   RequiredTraffic,
   Resource,
+  ResourceRequests,
   ServiceResource,
   Sku,
   TemporaryDisk,
diff --git a/sdk/appplatform/arm-appplatform/src/models/index.ts b/sdk/appplatform/arm-appplatform/src/models/index.ts
index 221fe440bc9f..93a226b15ad7 100644
--- a/sdk/appplatform/arm-appplatform/src/models/index.ts
+++ b/sdk/appplatform/arm-appplatform/src/models/index.ts
@@ -120,11 +120,11 @@ export interface ClusterResourceProperties {
  */
 export interface Sku {
   /**
-   * Name of the Sku
+   * Name of the Sku. Default value: 'S0'.
    */
   name?: string;
   /**
-   * Tier of the Sku
+   * Tier of the Sku. Default value: 'Standard'.
    */
   tier?: string;
   /**
@@ -417,7 +417,7 @@ export interface MonitoringSettingProperties {
   error?: ErrorModel;
   /**
    * Indicates whether enable the trace functionality, which will be deprecated since api version
-   * 2020-11-01-preview. Please leverage appInsightsInstrumentationKey to indicate if
+   * 2021-03-03-preview. Please leverage appInsightsInstrumentationKey to indicate if
    * monitoringSettings enabled or not
    */
   traceEnabled?: boolean;
@@ -546,10 +546,6 @@ export interface AppResourceProperties {
    * Indicate if only https is allowed.
    */
   httpsOnly?: boolean;
-  /**
-   * Indicate if end to end TLS is enabled.
-   */
-  enableEndToEndTLS?: boolean;
   /**
    * Date time when the resource is created
    * **NOTE: This property will not be serialized. It can only be populated by the server.**
@@ -563,6 +559,10 @@ export interface AppResourceProperties {
    * Persistent disk settings
    */
   persistentDisk?: PersistentDisk;
+  /**
+   * Indicate if end to end TLS is enabled.
+   */
+  enableEndToEndTLS?: boolean;
 }
 
 /**
@@ -822,20 +822,44 @@ export interface UserSourceInfo {
   artifactSelector?: string;
 }
 
+/**
+ * Deployment resource request payload
+ */
+export interface ResourceRequests {
+  /**
+   * Required CPU. 1 core can be represented by 1 or 1000m. This should be 500m or 1 for Basic
+   * tier, and {500m, 1, 2, 3, 4} for Standard tier.
+   */
+  cpu?: string;
+  /**
+   * Required memory. 1 GB can be represented by 1Gi or 1024Mi. This should be {512Mi, 1Gi, 2Gi}
+   * for Basic tier, and {512Mi, 1Gi, 2Gi, ..., 8Gi} for Standard tier.
+   */
+  memory?: string;
+}
+
 /**
  * Deployment settings payload
  */
 export interface DeploymentSettings {
   /**
-   * Required CPU, basic tier should be 1, standard tier should be in range (1, 4). Default value:
-   * 1.
+   * Required CPU. This should be 1 for Basic tier, and in range [1, 4] for Standard tier. This is
+   * deprecated starting from API version 2020-03-03-preview. Please use the resourceRequests field
+   * to set the CPU size. Default value: 1.
    */
   cpu?: number;
   /**
-   * Required Memory size in GB, basic tier should be in range (1, 2), standard tier should be in
-   * range (1, 8). Default value: 1.
+   * Required Memory size in GB. This should be in range [1, 2] for Basic tier, and in range [1, 8]
+   * for Standard tier. This is deprecated starting from API version 2020-03-03-preview. Please use
+   * the resourceRequests field to set the the memory size. Default value: 1.
    */
   memoryInGB?: number;
+  /**
+   * The requested resource quantity for required CPU and Memory. It is recommended that using this
+   * field to represent the required CPU and Memory, the old field cpu and memoryInGB will be
+   * deprecated later.
+   */
+  resourceRequests?: ResourceRequests;
   /**
    * JVM parameter
    */
diff --git a/sdk/appplatform/arm-appplatform/src/models/mappers.ts b/sdk/appplatform/arm-appplatform/src/models/mappers.ts
index d5aea74885fa..bdc207f71f79 100644
--- a/sdk/appplatform/arm-appplatform/src/models/mappers.ts
+++ b/sdk/appplatform/arm-appplatform/src/models/mappers.ts
@@ -196,12 +196,14 @@ export const Sku: msRest.CompositeMapper = {
     modelProperties: {
       name: {
         serializedName: "name",
+        defaultValue: 'S0',
         type: {
           name: "String"
         }
       },
       tier: {
         serializedName: "tier",
+        defaultValue: 'Standard',
         type: {
           name: "String"
         }
@@ -910,12 +912,6 @@ export const AppResourceProperties: msRest.CompositeMapper = {
           name: "Boolean"
         }
       },
-      enableEndToEndTLS: {
-        serializedName: "enableEndToEndTLS",
-        type: {
-          name: "Boolean"
-        }
-      },
       createdTime: {
         readOnly: true,
         serializedName: "createdTime",
@@ -936,6 +932,12 @@ export const AppResourceProperties: msRest.CompositeMapper = {
           name: "Composite",
           className: "PersistentDisk"
         }
+      },
+      enableEndToEndTLS: {
+        serializedName: "enableEndToEndTLS",
+        type: {
+          name: "Boolean"
+        }
       }
     }
   }
@@ -1354,6 +1356,28 @@ export const UserSourceInfo: msRest.CompositeMapper = {
   }
 };
 
+export const ResourceRequests: msRest.CompositeMapper = {
+  serializedName: "ResourceRequests",
+  type: {
+    name: "Composite",
+    className: "ResourceRequests",
+    modelProperties: {
+      cpu: {
+        serializedName: "cpu",
+        type: {
+          name: "String"
+        }
+      },
+      memory: {
+        serializedName: "memory",
+        type: {
+          name: "String"
+        }
+      }
+    }
+  }
+};
+
 export const DeploymentSettings: msRest.CompositeMapper = {
   serializedName: "DeploymentSettings",
   type: {
@@ -1374,6 +1398,13 @@ export const DeploymentSettings: msRest.CompositeMapper = {
           name: "Number"
         }
       },
+      resourceRequests: {
+        serializedName: "resourceRequests",
+        type: {
+          name: "Composite",
+          className: "ResourceRequests"
+        }
+      },
       jvmOptions: {
         serializedName: "jvmOptions",
         type: {
diff --git a/sdk/appplatform/arm-appplatform/src/models/monitoringSettingsMappers.ts b/sdk/appplatform/arm-appplatform/src/models/monitoringSettingsMappers.ts
index 0463b1feac36..a3f885750066 100644
--- a/sdk/appplatform/arm-appplatform/src/models/monitoringSettingsMappers.ts
+++ b/sdk/appplatform/arm-appplatform/src/models/monitoringSettingsMappers.ts
@@ -38,6 +38,7 @@ export {
   ProxyResource,
   RequiredTraffic,
   Resource,
+  ResourceRequests,
   ServiceResource,
   Sku,
   TemporaryDisk,
diff --git a/sdk/appplatform/arm-appplatform/src/models/servicesMappers.ts b/sdk/appplatform/arm-appplatform/src/models/servicesMappers.ts
index de115949d99c..a1644c98c0fc 100644
--- a/sdk/appplatform/arm-appplatform/src/models/servicesMappers.ts
+++ b/sdk/appplatform/arm-appplatform/src/models/servicesMappers.ts
@@ -41,6 +41,7 @@ export {
   RegenerateTestKeyRequestPayload,
   RequiredTraffic,
   Resource,
+  ResourceRequests,
   ServiceResource,
   ServiceResourceList,
   Sku,