Deploying a custom Teams tab to specific teams

Yes, it is possible to develop a custom Teams tab app and only allow it to be deployed to specific teams. Teams provides several options to support this scenario:

1. Upload app package directly to a team: Developers within your organization can add a custom app to Teams by uploading an app package (in a .zip file) directly to a team. This method is called sideloading. By uploading the app package directly to specific teams, you can control which teams have access to the app.

2. Custom app settings: As a Teams admin, you can use custom app settings to control who in your organization can upload custom apps to Microsoft Teams. Admins can decide which users can upload custom apps, and admins and team owners can determine whether specific teams in your organization allow custom apps to be added to them. You can edit the setup policy for custom apps to control the deployment of custom apps to specific teams.

Ref Doc:

• Manage app setup policies in Teams
• Upload a custom app directly to a team
  
  Thanks,
  Nivedipa
  -------------------------------------------------------------------------
  If the response is helpful, please click Mark as Best Response and like it. You can share your feedback via Microsoft Teams Developer Feedback link. Click here to escalate.