Abstract: A document management system/method allowing coordinated synchronized modifications and secure, scalable, multi-level, and controlled access to Data Content and/or Documents (DCDS) over a computer network between multiple Content Owners and/or Reviewers (CORS) is disclosed. The system/method is configured to allow any number of CORS to share DCDS using a Content Collaboration Platform (CCP) while retaining complete DCDS integrity/retrieval control using a hierarchical Access Rights and Control List (ARCL) to prevent CORS from uncoordinated DCDS modification and prohibiting local maintenance of DCDS copies after the expiration of a CORS Data Access Session (DAS). Upon termination of a CORS DAS, the system synchronizes modifications to the DCDS and coordinates control information among various CORS to ensure proper return of the DCDS back to its original CORS owner and associated CORS storage location.