diff --git a/samples/apps/copilot-chat-app/webapi/DeploymentTemplates/main.bicep b/samples/apps/copilot-chat-app/webapi/DeploymentTemplates/main.bicep
index 5ce8f64b6f795..6af512421a5bc 100644
--- a/samples/apps/copilot-chat-app/webapi/DeploymentTemplates/main.bicep
+++ b/samples/apps/copilot-chat-app/webapi/DeploymentTemplates/main.bicep
@@ -149,6 +149,7 @@ resource appServiceWebConfig 'Microsoft.Web/sites/config@2022-09-01' = {
     netFrameworkVersion: 'v6.0'
     use32BitWorkerProcess: false
     vnetRouteAllEnabled: true
+    webSocketsEnabled: true
     appSettings: [
       {
         name: 'AIService:Type'
@@ -595,6 +596,37 @@ resource sessionContainer 'Microsoft.DocumentDB/databaseAccounts/sqlDatabases/co
   }
 }
 
+resource participantContainer 'Microsoft.DocumentDB/databaseAccounts/sqlDatabases/containers@2023-04-15' = if (deployCosmosDB) {
+  parent: cosmosDatabase
+  name: 'chatparticipants'
+  properties: {
+    resource: {
+      id: 'chatparticipants'
+      indexingPolicy: {
+        indexingMode: 'consistent'
+        automatic: true
+        includedPaths: [
+          {
+            path: '/*'
+          }
+        ]
+        excludedPaths: [
+          {
+            path: '/"_etag"/?'
+          }
+        ]
+      }
+      partitionKey: {
+        paths: [
+          '/id'
+        ]
+        kind: 'Hash'
+        version: 2
+      }
+    }
+  }
+}
+
 resource speechAccount 'Microsoft.CognitiveServices/accounts@2022-12-01' = if (deploySpeechServices) {
   name: 'cog-${uniqueName}'
   location: location
diff --git a/samples/apps/copilot-chat-app/webapi/DeploymentTemplates/sk-existing-azureopenai.json b/samples/apps/copilot-chat-app/webapi/DeploymentTemplates/sk-existing-azureopenai.json
index 24813b185c64f..5938fcf263b70 100644
--- a/samples/apps/copilot-chat-app/webapi/DeploymentTemplates/sk-existing-azureopenai.json
+++ b/samples/apps/copilot-chat-app/webapi/DeploymentTemplates/sk-existing-azureopenai.json
@@ -5,7 +5,7 @@
     "_generator": {
       "name": "bicep",
       "version": "0.17.1.54307",
-      "templateHash": "4414214024449267703"
+      "templateHash": "11779741438695372787"
     }
   },
   "parameters": {
@@ -163,7 +163,7 @@
             "_generator": {
               "name": "bicep",
               "version": "0.17.1.54307",
-              "templateHash": "13834272519683618494"
+              "templateHash": "11121756795286782434"
             }
           },
           "parameters": {
@@ -401,6 +401,7 @@
                 "netFrameworkVersion": "v6.0",
                 "use32BitWorkerProcess": false,
                 "vnetRouteAllEnabled": true,
+                "webSocketsEnabled": true,
                 "appSettings": [
                   {
                     "name": "AIService:Type",
@@ -899,6 +900,41 @@
                 "[resourceId('Microsoft.DocumentDB/databaseAccounts/sqlDatabases', toLower(format('cosmos-{0}', variables('uniqueName'))), 'CopilotChat')]"
               ]
             },
+            {
+              "condition": "[parameters('deployCosmosDB')]",
+              "type": "Microsoft.DocumentDB/databaseAccounts/sqlDatabases/containers",
+              "apiVersion": "2023-04-15",
+              "name": "[format('{0}/{1}/{2}', toLower(format('cosmos-{0}', variables('uniqueName'))), 'CopilotChat', 'chatparticipants')]",
+              "properties": {
+                "resource": {
+                  "id": "chatparticipants",
+                  "indexingPolicy": {
+                    "indexingMode": "consistent",
+                    "automatic": true,
+                    "includedPaths": [
+                      {
+                        "path": "/*"
+                      }
+                    ],
+                    "excludedPaths": [
+                      {
+                        "path": "/\"_etag\"/?"
+                      }
+                    ]
+                  },
+                  "partitionKey": {
+                    "paths": [
+                      "/id"
+                    ],
+                    "kind": "Hash",
+                    "version": 2
+                  }
+                }
+              },
+              "dependsOn": [
+                "[resourceId('Microsoft.DocumentDB/databaseAccounts/sqlDatabases', toLower(format('cosmos-{0}', variables('uniqueName'))), 'CopilotChat')]"
+              ]
+            },
             {
               "condition": "[parameters('deploySpeechServices')]",
               "type": "Microsoft.CognitiveServices/accounts",
diff --git a/samples/apps/copilot-chat-app/webapi/DeploymentTemplates/sk-existing-openai.json b/samples/apps/copilot-chat-app/webapi/DeploymentTemplates/sk-existing-openai.json
index 1a92c5fdaa588..793d2894fadf4 100644
--- a/samples/apps/copilot-chat-app/webapi/DeploymentTemplates/sk-existing-openai.json
+++ b/samples/apps/copilot-chat-app/webapi/DeploymentTemplates/sk-existing-openai.json
@@ -5,7 +5,7 @@
     "_generator": {
       "name": "bicep",
       "version": "0.17.1.54307",
-      "templateHash": "15686037844465739324"
+      "templateHash": "697508036669684325"
     }
   },
   "parameters": {
@@ -158,7 +158,7 @@
             "_generator": {
               "name": "bicep",
               "version": "0.17.1.54307",
-              "templateHash": "13834272519683618494"
+              "templateHash": "11121756795286782434"
             }
           },
           "parameters": {
@@ -396,6 +396,7 @@
                 "netFrameworkVersion": "v6.0",
                 "use32BitWorkerProcess": false,
                 "vnetRouteAllEnabled": true,
+                "webSocketsEnabled": true,
                 "appSettings": [
                   {
                     "name": "AIService:Type",
@@ -894,6 +895,41 @@
                 "[resourceId('Microsoft.DocumentDB/databaseAccounts/sqlDatabases', toLower(format('cosmos-{0}', variables('uniqueName'))), 'CopilotChat')]"
               ]
             },
+            {
+              "condition": "[parameters('deployCosmosDB')]",
+              "type": "Microsoft.DocumentDB/databaseAccounts/sqlDatabases/containers",
+              "apiVersion": "2023-04-15",
+              "name": "[format('{0}/{1}/{2}', toLower(format('cosmos-{0}', variables('uniqueName'))), 'CopilotChat', 'chatparticipants')]",
+              "properties": {
+                "resource": {
+                  "id": "chatparticipants",
+                  "indexingPolicy": {
+                    "indexingMode": "consistent",
+                    "automatic": true,
+                    "includedPaths": [
+                      {
+                        "path": "/*"
+                      }
+                    ],
+                    "excludedPaths": [
+                      {
+                        "path": "/\"_etag\"/?"
+                      }
+                    ]
+                  },
+                  "partitionKey": {
+                    "paths": [
+                      "/id"
+                    ],
+                    "kind": "Hash",
+                    "version": 2
+                  }
+                }
+              },
+              "dependsOn": [
+                "[resourceId('Microsoft.DocumentDB/databaseAccounts/sqlDatabases', toLower(format('cosmos-{0}', variables('uniqueName'))), 'CopilotChat')]"
+              ]
+            },
             {
               "condition": "[parameters('deploySpeechServices')]",
               "type": "Microsoft.CognitiveServices/accounts",
diff --git a/samples/apps/copilot-chat-app/webapi/DeploymentTemplates/sk-new.json b/samples/apps/copilot-chat-app/webapi/DeploymentTemplates/sk-new.json
index 4ff96e90bb060..18c5ce2eacfd0 100644
--- a/samples/apps/copilot-chat-app/webapi/DeploymentTemplates/sk-new.json
+++ b/samples/apps/copilot-chat-app/webapi/DeploymentTemplates/sk-new.json
@@ -5,7 +5,7 @@
     "_generator": {
       "name": "bicep",
       "version": "0.17.1.54307",
-      "templateHash": "5066471234853584573"
+      "templateHash": "3338430546815090156"
     }
   },
   "parameters": {
@@ -145,7 +145,7 @@
             "_generator": {
               "name": "bicep",
               "version": "0.17.1.54307",
-              "templateHash": "13834272519683618494"
+              "templateHash": "11121756795286782434"
             }
           },
           "parameters": {
@@ -383,6 +383,7 @@
                 "netFrameworkVersion": "v6.0",
                 "use32BitWorkerProcess": false,
                 "vnetRouteAllEnabled": true,
+                "webSocketsEnabled": true,
                 "appSettings": [
                   {
                     "name": "AIService:Type",
@@ -881,6 +882,41 @@
                 "[resourceId('Microsoft.DocumentDB/databaseAccounts/sqlDatabases', toLower(format('cosmos-{0}', variables('uniqueName'))), 'CopilotChat')]"
               ]
             },
+            {
+              "condition": "[parameters('deployCosmosDB')]",
+              "type": "Microsoft.DocumentDB/databaseAccounts/sqlDatabases/containers",
+              "apiVersion": "2023-04-15",
+              "name": "[format('{0}/{1}/{2}', toLower(format('cosmos-{0}', variables('uniqueName'))), 'CopilotChat', 'chatparticipants')]",
+              "properties": {
+                "resource": {
+                  "id": "chatparticipants",
+                  "indexingPolicy": {
+                    "indexingMode": "consistent",
+                    "automatic": true,
+                    "includedPaths": [
+                      {
+                        "path": "/*"
+                      }
+                    ],
+                    "excludedPaths": [
+                      {
+                        "path": "/\"_etag\"/?"
+                      }
+                    ]
+                  },
+                  "partitionKey": {
+                    "paths": [
+                      "/id"
+                    ],
+                    "kind": "Hash",
+                    "version": 2
+                  }
+                }
+              },
+              "dependsOn": [
+                "[resourceId('Microsoft.DocumentDB/databaseAccounts/sqlDatabases', toLower(format('cosmos-{0}', variables('uniqueName'))), 'CopilotChat')]"
+              ]
+            },
             {
               "condition": "[parameters('deploySpeechServices')]",
               "type": "Microsoft.CognitiveServices/accounts",