Design and implement a pull request workflow by using branch policies and branch protections
Enforce Branch Policy Requirements
Branch policies are rules in Azure DevOps that ensure code quality and secure workflows when teams merge changes through pull requests. They act as quality gates that block a merge until every condition is satisfied, so critical branches stay protected from unauthorized or low-quality changes. By enforcing these policies, teams automate consistent standards across all contributors without relying on manual checks.
A policy can require a minimum number of reviewers who must approve each pull request before it is allowed to merge. It can also enforce required successful builds, meaning the automated build pipeline must pass before the pull request can be completed. Merge strategies control how the code is integrated—for example, using squash to combine commits, rebase to reapply commits on top of the target branch, or a no-fast-forward merge to preserve the full history. Each of these rules can be customized per branch type, giving flexibility for hotfixes or release branches.
Additional settings reinforce the review process and improve traceability. A policy can block unresolved comments, stopping a merge while reviewer feedback remains open. It can require linked work items, so every change is tied to a tracked purpose. Path filters let the policy apply only to specific directories or file patterns, which is useful when teams want different rules for different parts of the codebase. Together, these settings automate quality gates, reduce the risk of bugs reaching production, and scale code quality processes as the project grows.
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