Version Control

Version control is a system that records every change made to a set of files over time, so you can see what changed, who changed it and go back to an earlier version if needed. It is the standard way software teams work on the same files without overwriting each other.

It is like a document's full track-changes history, but for a whole project, with a reliable undo that reaches back weeks. Version control matters because it turns a risky, one-way process into a safe one, where a bad change can be found and reversed instead of quietly breaking things.