A version control system (VCS) is a software tool that allows developers to track changes to their codebase and collaborate with others on software projects. It allows developers to create multiple versions or "branches" of their code, merge changes from different branches, and revert to previous versions if necessary.
Version control systems are essential for any software development project, as they allow developers to collaborate more effectively, track changes to their code, and revert to previous versions if necessary. They also make it easier to debug code and identify issues, as developers can see exactly what changes have been made and when.
There are several types of version control systems available, including Git, Subversion, and Mercurial. Each has its own features and advantages, and developers may choose to use a particular VCS depending on the needs of their project.