Git is a distributed version control system that allows multiple people to work on the same files or codebase at once. It makes use of merging to compile changes made by several team members into a single file or codebase and branching to let developers to work on different areas of the codebase simultaneously.
Git also gives team members the ability to trace changes and go back in time, if necessary, by providing a complete history of all changes made to the project, including who made them, when they were done, and why.
Overall, Git is an essential piece of every collaborative project because it is an effective tool for managing and tracking changes made to documents, code, or other files over time.