A component content management system (CCMS) is a content management system that manages content at a granular level (component) rather than at the document level. Each component represents a single topic, concept or asset (for example an image, table, product description, a procedure). The CCMS must be able to track "not only versions of topics and graphics but relationships among topics, graphics, maps, publications, and deliverables." More often than not, the CCMS also contains the publishing engine to create the final outputs for print, web and e-readers.