Overview of the Basic Tab template

This template showcases how Microsoft Teams supports the ability to run web-based UI inside "custom tabs" that users can install either for just themselves (personal tabs) or within a team or group chat context.

Get started with the Basic Tab template

Prerequisites

To run the basic tab template in your local dev machine, you will need:

• Node.js, supported versions: 16, 18
• A Microsoft 365 account for development
• Set up your dev environment for extending Teams apps across Microsoft 365 Please note that after you enrolled your developer tenant in Office 365 Target Release, it may take couple days for the enrollment to take effect.
• Teams Toolkit Visual Studio Code Extension version 5.0.0 and higher or Teams Toolkit CLI

1. First, select the Teams Toolkit icon on the left in the VS Code toolbar.
2. In the Account section, sign in with your Microsoft 365 account if you haven't already.
3. Press F5 to start debugging which launches your app in Teams using a web browser. Select Debug in Teams (Edge) or Debug in Teams (Chrome).
4. When Teams launches in the browser, select the Add button in the dialog to install your app to Teams.

Congratulations! You are running an application that can now show a basic web page in Teams, Outlook and the Microsoft 365 app.

What's included in the template

Folder	Contents
.vscode	VSCode files for debugging
appPackage	Templates for the Teams application manifest
env	Environment files
infra	Templates for provisioning Azure resources
src	The source code for the Teams application

The following files can be customized and demonstrate an example implementation to get you started.

File	Contents
src/static/scripts/teamsapp.js	A script that calls teamsjs SDK to get the context of on which Microsoft 365 application your app is running.
src/static/styles/custom.css	css file for the app.
src/static/views/hello.html	html file for the app.
src/app.js	Starting a restify server.

The following are Teams Toolkit specific project files. You can visit a complete guide on Github to understand how Teams Toolkit works.

File	Contents
teamsapp.yml	This is the main Teams Toolkit project file. The project file defines two primary things: Properties and configuration Stage definitions.
teamsapp.local.yml	This overrides teamsapp.yml with actions that enable local execution and debugging.

Extend the Basic Tab template

Following documentation will help you to extend the Basic Tab template.

• Add or manage the environment
• Create multi-capability app
• Add single sign on to your app
• Access data in Microsoft Graph
• Use an existing Microsoft Entra application
• Customize the Teams app manifest
• Host your app in Azure by provision cloud resources and deploy the code to cloud
• Collaborate on app development
• Set up the CI/CD pipeline
• Publish the app to your organization or the Microsoft Teams app store
• Enable the app for multi-tenant
• Preview the app on mobile clients