Drupal is a software that can be used by individuals or groups of users -- even those lacking technical skills -- to easily create and manage many types of Web sites. The application includes a content management platform and a development framework, which is extensible enough to be used for many projects including game development, financial accounting, and more.
Git is a {{ book.glossary.vcs }} used by the Drupal Community.
Also known as version control, source control, or revision control. Version Control Systems (VCS) add a text-based layer of maintaining allchanges within an interative design process. Each time the document is 'saved' to the repository, the save is given a unique identifier that allows a Developer to fall back to (or before) that specific save. Newer systems, like {{ book.glossary.git }}.