In VSTS how to lock master branch so that no one can commit to it but pull requests from other branches can be merged?

Question

I want to enforce a specific policy on my master branch. In VSTS how to lock master branch so that no one can commit to it but pull requests from other branches can be merged?

Answer 1

Make changes on master branch only through pull request, you should set branch policies for master branch.

And you can find how branch policy works as below:

Protect this branch

• Setting a Required policy will enforce the use of pull requests when updating the branch

• Setting a Required policy will prevent branch deletion

• Manage permissions for this branch on the Security page

You can set the items for how to protect master branch. Such as below picture requires at least one reviewer for pull request.