A database application that makes it easier to build and manage websites as well as create dynamic user experiences. Some of the top CMS's are: Drupal, WordPress, Adobe CQ5 WCM, SiteCore, SharePoint, Joomla!, Expression Engine, Kentico, Interwoven and Vignette. Some are free and open source, whereas others can cost up to tens of thousands of dollars per year. Learn more about CMSs and how they work.
Make sure the CMS you are using is right for your company or organization. Some of the variables include cost, functionality, extensibility, ability to customize, and support.