We have a codebase that was mostly developed by a single person over 2 or 3 years. It's mostly all commits to master. We're now going to add some additional people to the team, and now that there are other people, we'd like to review eachother's code.
We're using AWS CodeCommit for source control. AWS recommends doing pull requests here https://aws.amazon.com/blogs/devops/using-aws-codecommit-pull-requests-to-request-code-reviews-and-discuss-code/
As we've been developing on master, we were wondering if there are any other mechanisms for doing code reviews without introducing feature branches?