This document discusses the version control system Git. It provides an overview of Git's history and functionality. Key points include: - Git was created in 2005 by Linus Torvalds and has surpassed Subversion in popularity. It allows for non-linear development with multiple branches. - Git uses local repositories that are regularly synchronized, allowing multiple developers to work simultaneously without interfering with each other. - The basic Git commands are 'git init' to initialize a repository, 'git add' to add files, and 'git commit' to commit changes with a message. Branches allow parallel development streams.