Add single sign-on to your Teams app

Microsoft Teams provides single sign-on (SSO) function for an app to obtain signed in Teams user token to access Microsoft Graph and other APIs. Teams Toolkit facilitates the interaction by abstracting some of the Microsoft Entra ID flows and integrations behind some simple APIs. This enables you to add SSO features easily to your Teams app.

Enable Single Sign-on in Teams Toolkit for Visual Studio

Teams provides SSO function for an app using the Microsoft Teams Toolkit for Microsoft Visual Studio.

1. Open Visual Studio.

2. Select Project > Teams Toolkit > Add Authentication Code.

   

Teams Toolkit helps you generate the authentication files in TeamsFx-Auth folder, including the app manifest (previously called Teams app manifest) template file for Microsoft Entra application and authentication redirect pages. Link the files to your Teams application by updating authentication configurations to ensure the SSO works for your application.

• In the Microsoft Entra app manifest file, specify the URIs (Uniform Resource Identifier) such as, the URI to identify the Microsoft Entra authentication app and the redirect URI for returning token.
• In the app manifest file, add the SSO application to link it with Teams application.
• Add SSO application information in Teams Toolkit configuration files in order to make sure the authentication app can be registered on backend service and start Teams Toolkit when you're debugging or previewing Teams application.

Teams tab application

1. Update Microsoft Entra app manifest: TeamsFx-Auth/aad.manifest.template.json file is a Microsoft Entra app manifest template. You can copy and paste this file to any folder of your project, and rename as aad.manifest.json and take note of the path to this file. The following updates in the template to create/update a Microsoft Entra app for SSO:

   • identifierUris: It's used to uniquely identify and access the resource. Set the correct redirect URIs into identifierUris to successfully identify this app. For more information, see identifierUris attribute.

         "identifierUris":[
           "api://${{TAB_DOMAIN}}/${{AAD_APP_CLIENT_ID}}"
         ]
     

   • replyUrlsWithType: It lists registered redirect_uri values that Microsoft Entra ID accepts as destinations when returning tokens. Set necessary redirect URIs into replyUrlsWithType to successfully return token. For more information, see replyUrlsWithType attribute.

         "replyUrlsWithType":[
       {
         "url": "${{TAB_ENDPOINT}}/auth-end.html",
         "type": "Web"
       }
     ]    
     

     Note

     Use ${{ENV_NAME}} to reference variables in env/.env.{TEAMSFX_ENV}.

         "replyUrlsWithType":[
       {
         "url": "${{TAB_ENDPOINT}}/auth-end.html",
         "type": "Web"
       },
       {
         "url": "${{TAB_ENDPOINT}}/auth-end.html?clientId=${{AAD_APP_CLIENT_ID}}",
         "type": "Spa"
       },
       {
         "url": "${{TAB_ENDPOINT}}/blank-auth-end.html",
         "type": "Spa"
       }
     ]
     

   • "name": It replaces the value with your expected Microsoft Entra app name.

2. Open your app manifest file, add WebApplicationInfo property with the value of your SSO app. For more information, see webApplicationInfo.

       "webApplicationInfo": {
         "id": "${{AAD_APP_CLIENT_ID}}",
         "resource": "SAME_AS_YOUR_IDENTIFIERURIS"
       }
   

   Note

   Update the value of resource to your identifierUris configed in step 1, and use ${{ENV_NAME}} to reference envs in env/.env.{TEAMSFX_ENV}.

3. Open the appPackage/manifest.json file, and add the following code:

   "webApplicationInfo": {
     "id": "${{AAD_APP_CLIENT_ID}}",
     "resource": "api://${{TAB_DOMAIN}}/${{AAD_APP_CLIENT_ID}}"
   }
   

4. Update the teamsapp.yml file and the teamsapp.local.yml file.

   Add Microsoft Entra related changes and configs into your yml files:

   • Add aadApp/create under provision: Create new Microsoft Entra apps used for SSO. For more information, see aadApp/create.

   • Add aadApp/update under provision: Update your Microsoft Entra app with Microsoft Entra app manifest in step 1. For more information, see aadApp/update.

   • Update file/createOrUpdateJsonFile: Add the following environment variables when you debug locally:

     1. ClientId: Microsoft Entra app client ID.
     2. ClientSecret: Microsoft Entra app client secret.
     3. OAuthAuthority: Microsoft Entra app oauth authority.

     For more information, see file/updateJson.

   • In both the teamsapp.yml file and the teamsapp.local.yml file add the following code under the provision to create Microsoft Entra app.

     - uses: aadApp/create
       with:
         name: "YOUR_AAD_APP_NAME"
         generateClientSecret: true
         signInAudience: "AzureADMyOrg"
       writeToEnvironmentFile:
         clientId: AAD_APP_CLIENT_ID
         clientSecret: SECRET_AAD_APP_CLIENT_SECRET
         objectId: AAD_APP_OBJECT_ID
         tenantId: AAD_APP_TENANT_ID
         authority: AAD_APP_OAUTH_AUTHORITY
         authorityHost: AAD_APP_OAUTH_AUTHORITY_HOST
     

     Note

     Replace the value of "name" with your expected Microsoft Entra app name.

   • Add the following lines under provision to configure Microsoft Entra app with Microsoft Entra app template in the step 1.

     - uses: aadApp/update
       with:
         manifestPath: "YOUR_PATH_TO_AAD_APP_MANIFEST"
         outputFilePath : ./build/aad.manifest.${{TEAMSFX_ENV}}.json
     

     Note

     Replace the value of manifestPath with the relative path of Microsoft Entra app manifest noted in step 1. For example: ./aad.manifest.json

   In the teamsapp.local.yml file:

   • Add the following code under provision to add Microsoft Entra related configs to local debug service.

        - uses: file/createOrUpdateJsonFile
          with:
            target: ./appsettings.Development.json
            appsettings:
              TeamsFx:
                Authentication:
                  ClientId: ${{AAD_APP_CLIENT_ID}}
                  ClientSecret: ${{SECRET_AAD_APP_CLIENT_SECRET}}
                  InitiateLoginEndpoint: ${{TAB_ENDPOINT}}/auth-start.html
                  OAuthAuthority: ${{AAD_APP_OAUTH_AUTHORITY}}
     

5. Update Infra Microsoft Entra related configs need to be configured in your remote service. The following example shows the configs on Azure Webapp.

   1. TeamsFx__Authentication__ClientId: Microsoft Entra app client ID.
   2. TeamsFx__Authentication__ClientSecret: Microsoft Entra app client secret.
   3. TeamsFx__Authentication__OAuthAuthority: Microsoft Entra app oauth authority.

   Example for TeamsFx Tab template.

   Open infra/azure.parameters.json and add following lines into parameters:

   "tabAadAppClientId": {
    "value": "${{AAD_APP_CLIENT_ID}}"
   },
   "tabAadAppClientSecret": {
    "value": "${{SECRET_AAD_APP_CLIENT_SECRET}}"
   },
   "tabAadAppOauthAuthorityHost": {
    "value": "${{AAD_APP_OAUTH_AUTHORITY_HOST}}"
   },
   "tabAadAppTenantId": {
    "value": "${{AAD_APP_TENANT_ID}}"
   }
   

   Open the infra/azure.bicep file, find the code:

   param location string = resourceGroup().location
   

   Update the code as:

   param tabAadAppClientId string
   param tabAadAppOauthAuthorityHost string
   param tabAadAppTenantId string
   @secure()
   param tabAadAppClientSecret string
   

   In the infra/azure.bicep file, find the code:

   resource webApp 'Microsoft.Web/sites@2021-02-01' = {
      kind: 'app'
      location: location
      name: webAppName
      properties: {
        serverFarmId: serverfarm.id
        httpsOnly: true
        siteConfig: {
          appSettings: [
            {
              name: 'WEBSITE_RUN_FROM_PACKAGE'
              value: '1'
            }
          ]
          ftpsState: 'FtpsOnly'
        }
      }
    }
   

   Update the code as:

   resource webApp 'Microsoft.Web/sites@2021-02-01' = {
      kind: 'app'
      location: location
      name: webAppName
      properties: {
        serverFarmId: serverfarm.id
        httpsOnly: true
        siteConfig: {
          ftpsState: 'FtpsOnly'
        }
      }
    }
   
    resource  webAppConfig  'Microsoft.Web/sites/config@2021-02-01' = {
      name: '${webAppName}/appsettings'
      properties: {
        WEBSITE_RUN_FROM_PACKAGE: '1'
        TeamsFx__Authentication__ClientId: tabAadAppClientId
        TeamsFx__Authentication__ClientSecret: tabAadAppClientSecret
        TeamsFx__Authentication__InitiateLoginEndpoint: 'https://${webApp.properties.defaultHostName}/auth-start.html'
        TeamsFx__Authentication__OAuthAuthority: uri(tabAadAppOauthAuthorityHost, tabAadAppTenantId)
      }
    }
   

6. Update appsettings.json and appsettings.Development.json files for Microsoft Entra related configs needs to be configured to your .NET project settings:

   TeamsFx: {
         Authentication: {
           ClientId: AAD app client id
           ClientSecret: AAD app client secret,
           InitiateLoginEndpoint: Login Endpoint,
           OAuthAuthority: AAD app oauth authority
         }
       }
   

   Note

   You can use use $ENV_NAME$ to reference envs in local/remote service.

   Example for TeamsFx Tab template.

   Open appsettings.json and appsettings.Development.json files, and update the code:

   "TeamsFx": { 
        "Authentication": { 
          "ClientId": "$clientId$", 
          "ClientSecret": "$client-secret$",
          "InitiateLoginEndpoint": "$TAB_ENDPOINT$/auth-start.html",
          "OAuthAuthority": "$oauthAuthority$"
        } 
      }
   

7. Your environment is ready and you can update your code to add SSO to your Teams app. You can find samples:

   • TeamsFx SDK: https://www.nuget.org/packages/Microsoft.TeamsFx/
   • Sample Code: under TeamsFx-Auth/Tab

   Example for TeamsFx Tab template.

   • Create Config.cs and update the code as:

     using Microsoft.TeamsFx.Configuration;
     
          namespace {{YOUR_NAMESPACE}}
          {
              public class ConfigOptions
              {
                  public TeamsFxOptions TeamsFx { get; set; }
              }
              public class TeamsFxOptions
              {
                  public AuthenticationOptions Authentication { get; set; }
              }
          }
     

     Note

     You need to replace {{YOUR_NAMESPACE}} with your namespace name.

   • Move the TeamsFx-Auth/Tab/GetUserProfile.razor file to Components/.

   • Add the GetUserProfile component to your razor page, for example:

     <h1>Hello, World</h1>
     <GetUserProfile />
     

   • Open the Program.cs file, find the code:

     builder.Services.AddScoped<MicrosoftTeams>();
     

     and update the code as:

               var config = builder.Configuration.Get<ConfigOptions>();
               builder.Services.AddTeamsFx(config.TeamsFx.Authentication);
         ```
     
     

   Note

   You need to exclude the sample code under the TeamsFx-Auth file to avoid build failure by adding following code into the .csproj file:

       <ItemGroup>
       <Compile Remove="TeamsFx-Auth/**/*" />
       <None Include="TeamsFx-Auth/**/*" />
       <Content Remove="TeamsFx-Auth/Tab/GetUserProfile.razor"/>
     </ItemGroup>
       ```
   
   * Download `auth-start.html` and `auth-end.html` files from [GitHub Repo](https://github.com/OfficeDev/TeamsFx/tree/dev/templates/csharp/sso-tab/wwwroot) to `{ProjectDirectory}/wwwroot`.
   
   

8. To check the SSO app works as expected, run the Local Debug in Visual Studio.

9. You can also run the app in cloud by selecting the Provision in the cloud and then Deploy to the cloud.

Teams bot application

1. Update Microsoft Entra app manifest in the TeamsFx-Auth/aad.manifest.template.json file.

2. You can copy the file to any folder of your project, and rename as the aad.manifest.json file and note the path to this file for later reference. Make the following updates in the template to create or update a Microsoft Entra app for SSO.

   • identifierUris: Used to uniquely identify and access the resource. You need to set correct Redirect URIs into "identifierUris" for successfully identify this app. For more information, see identifierUris attribute.

   Example for TeamsFx Bot Template:

   "identifierUris":[
     "api://botid-${{BOT_ID}}"
   ]
   

   Note

   You can use ${{ENV_NAME}} to reference variables in the env/.env.{TEAMSFX_ENV} file.

   • replyUrlsWithType: It lists registered redirect_uri values that Microsoft Entra ID accepts as destinations when returning tokens. You need to set necessary Redirect URIs into "replyUrlsWithType" for successfully returning token. For more information, see replyUrlsWithType attribute.

   Example:

   "replyUrlsWithType":[
     {
       "url": "https://${{BOT_DOMAIN}}/bot-auth-end.html",
       "type": "Web"
     }
   ]
   

   Note

   You can use use ${{ENV_NAME}} to reference envs in the env/.env.{TEAMSFX_ENV} file.

   Example:

   "replyUrlsWithType":[
     {
     "url": "https://${{BOT_DOMAIN}}/bot-auth-end.html",
     "type": "Web"
     }
   ]
   

   • "name": Replace the value with your expected Microsoft Entra app name.

3. Update app manifest.

   • A WebApplicationInfo object needs to be added into your app manifest to enable SSO in the Teams app. For more information, see webApplicationInfo.

   For example: open your app manifest template, and append the following object in app manifest:

   "webApplicationInfo": {
     "id": "${{AAD_APP_CLIENT_ID}}",
     "resource": "SAME_AS_YOUR_IDENTIFIERURIS"
   }
   

   Note

   You need to update the value of resource to your identifierUris configured in step 1.i, and use ${{ENV_NAME}} to reference envs in env/.env.{TEAMSFX_ENV}.

   Example for TeamsFx Bot template:

   Open the appPackage/manifest.json file, and add the following property in the app manifest file:

   "webApplicationInfo": {
     "id": "${{AAD_APP_CLIENT_ID}}",
     "resource": "api://botid-${{BOT_ID}}"
   }
   

   • You can register your command under commands in commandLists of your bot:

   {
     "title": "YOUR_COMMAND_TITLE",
     "description": "YOUR_COMMAND_DESCRIPTION"
   }
   

   Example for TeamsFx Bot template:

   {
     "title": "show",
     "description": "Show user profile using Single Sign On feature"
   }
   

   Remember to delete the previous 'helloWorld' command since it isn't used.

   • Also add bot domain to validDomain:

   "validDomains": [
     "${{BOT_DOMAIN}}"
   ]
   

4. Update teamsapp.yml and teamsapp.local.yml files: Microsoft Entra related changes and configs needs to be added into your yml files:

   • Add aadApp/create under provision for creating new Microsoft Entra apps used for SSO. For more information, see available actions in Teams Toolkit.

   • Add aadApp/update under provision for updating your Microsoft Entra app with Microsoft Entra app manifest in step 1. For more information, see aadApp/update.

   • Update file/createOrUpdateJson File for adding the following environment variables during local debug:

     1. ClientId: Microsoft Entra app client ID.
     2. ClientSecret: Microsoft Entra app client secret.
     3. OAuthAuthority: Microsoft Entra app oauth authority. For more information, see file/updateJson.

   Example for TeamsFx Bot template

   In both teamsapp.yml and teamsapp.local.yml files:

   • Add the code under provision to create Microsoft Entra app.

   - uses: aadApp/create
        with:
          name: "YOUR_AAD_APP_NAME"
          generateClientSecret: true
          signInAudience: "AzureADMyOrg"
        writeToEnvironmentFile:
            clientId: AAD_APP_CLIENT_ID
            clientSecret: SECRET_AAD_APP_CLIENT_SECRET
            objectId: AAD_APP_OBJECT_ID
            tenantId: AAD_APP_TENANT_ID
            authority: AAD_APP_OAUTH_AUTHORITY
            authorityHost: AAD_APP_OAUTH_AUTHORITY_HOST
   

   Note

   Replace the value of "name" with your expected Microsoft Entra app name.

   • Add the code under provision to configure Microsoft Entra app with Microsoft Entra app template in the step 1.

     - uses: aadApp/update
             with:
               manifestPath: "./aad.manifest.json"
               outputFilePath : ./build/aad.manifest.${{TEAMSFX_ENV}}.json
     

     Note

     Replace the value of "manifestPath" with the relative path of Microsoft Entra app manifest noted in step 1. For example, './aad.manifest.json'

   In the teamsapp.local.yml file:

   • Update file/createOrUpdateJsonFile under provision to add Microsoft Entra related configs to local debug service.

     - uses: file/createOrUpdateJsonFile
             with:
               target: ./appsettings.Development.json
               appsettings:
                 BOT_ID: ${{BOT_ID}}
                 BOT_PASSWORD: ${{SECRET_BOT_PASSWORD}}
                 TeamsFx:
                   Authentication:
                     ClientId: ${{AAD_APP_CLIENT_ID}}
                     ClientSecret: ${{SECRET_AAD_APP_CLIENT_SECRET}}
                     OAuthAuthority: ${{AAD_APP_OAUTH_AUTHORITY}}/${{AAD_APP_TENANT_ID}}
                     ApplicationIdUri: api://botid-${{BOT_ID}}
                     Bot:
                       InitiateLoginEndpoint: https://${{BOT_DOMAIN}}/bot-auth-start
     

5. Update Infra Microsoft Entra related configs to configure remote service. The following example shows the configs on Azure Webapp.

   1. TeamsFx__Authentication__ClientId: Microsoft Entra app client ID.
   2. TeamsFx__Authentication__ClientSecret: Microsoft Entra app client secret.
   3. TeamsFx__Authentication__OAuthAuthority: Microsoft Entra app oauth authority.
   4. TeamsFx__Authentication__Bot__InitiateLoginEndpoint: Auth start page for Bot.
   5. TeamsFx__Authentication__ApplicationIdUri: Microsoft Entra app identifies URIs.

   Example for TeamsFx Bot template:

   Open the infra/azure.parameters.jsonfile, add the code to parameters:

   "m365ClientId": {
     "value": "${{AAD_APP_CLIENT_ID}}"
   },
   "m365ClientSecret": {
     "value": "${{SECRET_AAD_APP_CLIENT_SECRET}}"
   },
   "m365TenantId": {
     "value": "${{AAD_APP_TENANT_ID}}"
   },
   "m365OauthAuthorityHost": {
     "value": "${{AAD_APP_OAUTH_AUTHORITY_HOST}}"
   }
   

   Open the infra/azure.bicep file and find the code:

   param location string = resourceGroup().location
   

   Update the code as:

   param m365ClientId string
   param m365TenantId string
   param m365OauthAuthorityHost string
   param m365ApplicationIdUri string = 'api://botid-${botAadAppClientId}'
   @secure()
   param m365ClientSecret string
   

   Add the code before output:

   resource webAppSettings 'Microsoft.Web/sites/config@2021-02-01' = {
     name: '${webAppName}/appsettings'
     properties: {
         TeamsFx__Authentication__ClientId: m365ClientId
         TeamsFx__Authentication__ClientSecret: m365ClientSecret
         TeamsFx__Authentication__Bot__InitiateLoginEndpoint: uri('https://${webApp.properties.defaultHostName}', 'bot-auth-start')
         TeamsFx__Authentication__OAuthAuthority: uri(m365OauthAuthorityHost, m365TenantId)
         TeamsFx__Authentication__ApplicationIdUri: m365ApplicationIdUri
         BOT_ID: botAadAppClientId
         BOT_PASSWORD: botAadAppClientSecret
         RUNNING_ON_AZURE: '1'
     }
   }
   

   Note

   If you want add additional configs to your Azure Webapp, add the configs in the webAppSettings.

6. Update the appsettings.json file and the appsettings.Development.json file for Microsoft Entra related configs that needs to be configured to your .NET project settings:

   TeamsFx: {
     Authentication: {
       ClientId: AAD app client id
       ClientSecret: AAD app client secret,
       OAuthAuthority: AAD app oauth authority,
       ApplicationIdUri: AAD app identify uri,
       Bot: {
         InitiateLoginEndpoint: Auth start page for Bot
       }
     }
   }
   

   Note

   You can use $ENV_NAME$ to reference envs in local/remote service.

   Example for TeamsFx Bot template:

   Open appsettings.json and appsettings.Development.json files, and add the code:

   "TeamsFx": {
     "Authentication": {
       "ClientId": "$clientId$",
       "ClientSecret": "$client-secret$",
       "OAuthAuthority": "$oauthAuthority$",
       "ApplicationIdUri": "$applicationIdUri$",
       "Bot": {
         "InitiateLoginEndpoint": "$initiateLoginEndpoint$"
       }
     }
   }
   

7. Update your code to add SSO to your Teams app.

   You can find samples code:

   • TeamsFx SDK: https://www.nuget.org/packages/Microsoft.TeamsFx/
   • Sample Code: under TeamsFx-Auth/Bot

   Example for TeamsFx Bot template:

   • Open Config.cs and replace the code:

   using Microsoft.TeamsFx.Configuration;
   
   namespace {{YOUR_NAMESPACE}}
   {
       public class TeamsFxOptions
       {
           public AuthenticationOptions Authentication { get; set; }
       }
   
       public class ConfigOptions
       {
           public string BOT_ID { get; set; }
           public string BOT_PASSWORD { get; set; }
           public TeamsFxOptions TeamsFx { get; set; }
       }
   }
   

   Note

   Replace the {{YOUR_NAMESPACE}} property with your namespace name.

   • Move TeamsFx-Auth/Bot/SSO and TeamsFx-Auth/Bot/Pages files to /.

     Note

     Remember to replace {{YOUR_NAMESPACE}} with your project namespace.

   • Open the Program.cs file, and find the code:

   builder.Services.AddSingleton<BotFrameworkAuthentication, ConfigurationBotFrameworkAuthentication>();
   

   Update the code as:

   builder.Services.AddRazorPages();
   
   // Create the Bot Framework Adapter with error handling enabled.                                        
   builder.Services.AddSingleton<IBotFrameworkHttpAdapter, AdapterWithErrorHandler>();
   
   builder.Services.AddSingleton<IStorage, MemoryStorage>();
   // Create the Conversation state. (Used by the Dialog system itself.)
   builder.Services.AddSingleton<ConversationState>();
   
   // The Dialog that will be run by the bot.
   builder.Services.AddSingleton<SsoDialog>();
   
   // Create the bot as a transient. In this case the ASP Controller is expecting an IBot.
   builder.Services.AddTransient<IBot, TeamsSsoBot<SsoDialog>>();
   
   builder.Services.AddOptions<BotAuthenticationOptions>().Configure(options =>
   {
     options.ClientId = config.TeamsFx.Authentication.ClientId;
     options.ClientSecret = config.TeamsFx.Authentication.ClientSecret;
     options.OAuthAuthority = config.TeamsFx.Authentication.OAuthAuthority;
     options.ApplicationIdUri = config.TeamsFx.Authentication.ApplicationIdUri;
     options.InitiateLoginEndpoint = config.TeamsFx.Authentication.Bot.InitiateLoginEndpoint;
   });
   

   Find the code:

   builder.Services.AddSingleton<HelloWorldCommandHandler>();
   builder.Services.AddSingleton(sp =>
   {
     var options = new ConversationOptions()
     {
       Adapter = sp.GetService<CloudAdapter>(),
       Command = new CommandOptions()
       {
         Commands = new List<ITeamsCommandHandler> { sp.GetService<HelloWorldCommandHandler>() }
       }
     };
   
     return new ConversationBot(options);
   });
   

   Update the code as:

   builder.Services.AddSingleton(sp =>
   {
     var options = new ConversationOptions()
     {
       Adapter = sp.GetService<CloudAdapter>(),
       Command = new CommandOptions()
       {
         Commands = new List<ITeamsCommandHandler> { }
       }
     };
   
     return new ConversationBot(options);
   });
   

   Find and delete the code:

   // Create the bot as a transient. In this case the ASP Controller is expecting an IBot.
   builder.Services.AddTransient<IBot, TeamsBot>();
   

   Find the code:

   app.UseEndpoints(endpoints =>
   {
     endpoints.MapControllers();
   });
   

   Update the code as:

   app.UseEndpoints(endpoints =>
   {
     endpoints.MapControllers();
     endpoints.MapRazorPages();
   });
   

   Note

   You need to exclude the sample code under TeamsFx-Auth to avoid build failure by adding the following code to .csproj file:

   <ItemGroup>
     <Compile Remove="TeamsFx-Auth/**/*" />
     <None Include="TeamsFx-Auth/**/*" />
     <Content Remove="TeamsFx-Auth/Tab/GetUserProfile.razor"/>
   </ItemGroup>
   

8. To check if SSO app works as expected, run the Local Debug in Visual Studio.

9. You can also run the app in cloud by selecting Provision in the cloud and then select Deploy to the cloud to update your app.

See also

• Teams Toolkit Overview
• Prerequisites for creating your Teams app
• Enable SSO for tab app
• Enable SSO for your bot and message extension
• Prepare accounts to build your Teams app