A content management system (CMS) is a computer application that supports the creation and modification of digital content using a simpler interface to abstract away low-level details unless required, usually supporting multiple users working in acollaborative environment. CMSes have been available since the late 1990s.
CMS features vary widely. Most CMSes include Web-based publishing, format management, edit history and version control, indexing, search, and retrieval. By their nature, content management systems support the separation of content and presentation.
A web content management system (WCM or WCMS) is a CMS designed to support the management of the content of Web pages. Most popular CMSes are also WCMSes. Web content includes text and embedded graphics, photos, video, audio, and code (e.g., for applications) that displays content or interacts with the user.