An enterprise content management federation and integration system integrates a plurality of applications and federates information seamlessly by receiving, by a composite system, a request from a client system. The system then translates, by a manager system, the request from the client system. The manager system performs one or more high level validations and retrieves information from a mapping stored by an ontology modeling system, a plurality of content types, repositories, actions and object types based at least in part on a plurality of attributes including one or more metadata models or attribute models. The manager system then invokes one or more composites based at least in part on the request from the client system and some or all the information retrieved from the mapping.