Git is a distributed version control system that allows multiple people to collaborate on a project, keeping track of changes made to files and allowing for easy merging and branching. It is commonly used in software development, but can be used for managing any type of files. Git tracks changes to files using a series of commits, which are snapshots of the files at a certain point in time. These commits are organized into branches, which can be thought of as separate paths of development. Git provides commands to create new branches, switch between branches, merge branches together, and push changes to a remote repository. It also provides tools for resolving conflicts that may occur when merging changes made to the same file by different people. Overall, Git is a powerful tool for managing and tracking changes to files in a collaborative environment.