What is Git?

Git is a free and open source distributed version control system designed to handle everything from small to very large projects with speed and efficiency.

Git allows groups of people to work on the same documents (often code) at the same time, and without stepping on each other's toes. It's a distributed version control system.

Git is a distributed system, everyone has their own copy of the source codes.

Distributed version control system:

A distributed version control system has not necessary a central server which stores the data.

The user can copy an existing repository. This copying process is typically called cloning in a distributed version control system.

Typically there is a central server for keeping a repository but each cloned repository is a full copy of this repository. The decision which of the copies is considered to be the central server repository is a pure convention and not tied to the capabilities of the distributed version control itself.

Every local copy contains the full history of the collection of files and a cloned repository has the same functionality as the original repository.

Every repository can exchange versions of the files with other repositories by transporting these changes. This is typically done via the selected central server repository.