CODEOWNERS defines responsible reviewers
A CODEOWNERS file can specify which users or teams should be requested for review when particular files or directories change. This is especially useful for large repositories with specialized areas.
Keep ownership accurate
Ownership rules become harmful when they point to inactive teams or unnecessarily require large numbers of reviewers. Review the file as team responsibilities change.
Location matters
GitHub evaluates CODEOWNERS from supported repository locations according to its rules. Follow the repository platform's documented placement and syntax rather than assuming any arbitrary directory will work.