Git is a version control system that helps developers manage changes to their code over time. It allows multiple people to work on the same project simultaneously without overwriting each other's work. By tracking changes, Git makes it easy to revert to previous versions if needed. With Git, users can create branches to experiment with new features without affecting the main codebase. Once changes are finalized, they can be merged back into the main project. This system enhances collaboration and ensures that the development process is organized and efficient.