What Is Git? Version Control Explained

What Git is

Git is a version control system, a tool that tracks changes to files over time, letting you see the history of a project, revert to earlier versions, and collaborate with others without overwriting each other's work. It is especially used for source code, though it can track any files. Created by Linus Torvalds (who also started Linux), Git has become the standard tool developers use to manage their code and work together on projects.

Why version control matters

Without version control, managing changes is chaos: files named 'final,' 'final_v2,' 'final_really_final,' no clear history, and the constant risk of losing work or overwriting a colleague's changes. Version control solves all of this. It records every change, who made it and when, lets you roll back mistakes, and coordinates multiple people editing the same project. For any project that evolves over time, especially with a team, it is indispensable.

Commits and history

In Git, you save your progress by making 'commits', snapshots of your project at a point in time, each with a message describing what changed. The full sequence of commits forms the project's history. You can look back at any commit, compare versions, and undo changes by returning to an earlier state. This detailed, reversible history is the heart of what Git provides: a complete, navigable record of how a project came to be.

Branches and merging

One of Git's most powerful features is 'branching.' A branch lets you work on a new feature or experiment in isolation, without disturbing the main version of the project. When your work is ready, you 'merge' it back in. Multiple people can work on different branches simultaneously and combine their work. This is what makes Git so good for collaboration: everyone can work in parallel, then integrate their changes in a controlled way.

Git vs. GitHub

People often confuse Git and GitHub. Git is the version control tool itself, which runs on your computer. GitHub is an online service that hosts Git repositories, making it easy to store code in the cloud, share it, and collaborate with others. GitHub (and alternatives like GitLab) adds a web interface and collaboration features on top of Git. You can use Git without GitHub, but the two are commonly used together.

Why it matters

Git is a foundational tool in modern software development, used by individual developers and huge teams alike. Understanding it clarifies how code is managed, how open-source projects coordinate thousands of contributors, and why 'commit,' 'branch,' and 'merge' are everyday words for programmers. Even beyond coding, the idea of tracked, reversible version history is valuable, and Git is the tool that made it standard practice.

Related on Skillo

See also: What is version control? Explained for beginners, What is the command line, and why developers use it.

Sources

• Git - Wikipedia

Published date reflects the original event date (2024-12-17). This article is original Skillo editorial written from the sources above; facts were verified in September 2026.