A web content management system (WCMS) is a software system that provides website authoring, collaboration, and administration tools designed to allow users with little knowledge of web programming languages or markup languages to create and manage website content with relative ease. 
Most systems use a database to store page content, metadata, and other information assets that might be needed by the system.
A presentation layer displays the content to website visitors based on a set of templates. 
Administration is typically done through browser-based interfaces.