What are common Git branching strategies?

Git Flow: main (production), develop, feature branches, release branches, hotfix branches - structured but complex. GitHub Flow: main + feature branches, deploy from main - simpler, good for continuous deployment. Trunk-Based: everyone commits to main frequently, feature flags for incomplete work - favors CI/CD. GitLab Flow: environment branches (production, staging) - adds deployment tracking. Choose based on team size, release frequency, and deployment model.