Publish your Teams tab app
In the preceding units, you learned how to provision cloud resources and deploy the app code to them. Next, you learn how to publish your app to Microsoft Teams by using Teams Toolkit.
The process of publishing an app to Microsoft Teams consists of creating an app package. The app package contains the app manifest file, which describes how your app integrates into Microsoft Teams. The app package also contains icons for your app. To publish, you upload the package to Microsoft Teams. Then a Microsoft Teams administrator publishes the package in the Microsoft Teams admin center.
The Publish feature in Teams Toolkit generates the app package which is a zip file named appPackage.dev.zip in the appPackage/build folder of your project and automatically uploads it to your organization store. Your Teams administrator then publishes the app.
You don't need to publish your app every time you make a code change. But if you make a change to the app manifest file, such as adding a new capability, you must publish your app again for the change to be available to users in the app.