What's a content management system (CMS)?
A content management system is software that keeps track of every piece of content on your Web site, much like your local public library keeps track of books and stores them. Content can be simple text, photos, music, video, documents, or just about anything you can think of. A major advantage of using a CMS is that it requires almost no technical skill or knowledge to manage. Since the CMS manages all your content, you don't have to.

For example:
Corporate Web sites or portals
Corporate intranets and extranets
Online magazines, newspapers, and publications
Small business Web sites
Non-profit and organizational Web sites
Community-based portals
School and church Web sites
Personal or family homepages