Branching is the process of creating independent code branches that developers work on separately. Once the code in a branch has been tested and the work is finished, it gets migrated to the trunk of the code. Such a process has many advantages, but migration can still be complicated. In the context of DevOps, effective branching strategies help maintain continuous integration and deployment. Some of the most popular branching strategies are GitFlow, GitHub Flow, GitLab Flow, and Trunk-Based Development (TBD) - each with its own strengths and trade-offs.