A Version Control System (VCS) is a software tool used to track changes to a set of files over time. It is commonly used in software development to keep track of different versions of code, and is also used in Drupal to manage changes to the codebase. VCS allows developers to easily collaborate on projects, as well as roll back changes if needed.

In Drupal, VCS is used to manage the codebase of the CMS. It allows developers to easily collaborate on projects, as well as roll back changes if needed. It also allows developers to easily track changes to the codebase, and to easily identify which version of the codebase is currently in use.

VCS is an important tool for Drupal developers, as it allows them to easily collaborate on projects, as well as roll back changes if needed. It also allows developers to easily track changes to the codebase, and to easily identify which version of the codebase is currently in use.