Step 1: Initialize the Default Main Branch

Navigate to Azure DevOps:

Go to Azure DevOps and sign in with your credentials.

Select Your Project:

Choose Project1 from your list of projects.

Initialize the Main Branch:

Go to Repos > Files.

If themain branch does not exist, you will see an option to initialize it. Click on Initialize and follow the prompts to create the main branch.

Step 2: Implement an Approval Process for the Main Branch

Navigate to Branch Policies:

Go to Repos > Branches.

Findthe main branch and click on the … (ellipsis) next to it.

Select Branch policies.

Enable Required Reviewers:

Under Policies, enable Minimum number of reviewers.

Set the minimum number of reviewers to 2 to enforce the four-eyes principle.

Add RequiredReviewers:

Add the users who should review the changes. Ensure that at least one approval is required on every iteration.

Enable Reset Code Reviewer Votes:

Enable the Reset code reviewer votes when there are new changes option to ensure that any new changes require re-approval.

Save Changes:

Click on Save changes to apply the policies.

Step 3: Verify the Approval Process

Create a Pull Request:

Make a change in a branch and create a pull request to merge it into the main branch.

Review and Approve:

Ensurethat the pull request requires at least two reviewers to approve it before it can be merged.

By following these steps, you will have successfully initialized themain branch and implemented an approval process that adheres to the four-eyes principle, ensuring that every iteration has at least one approval