DMS (Document Management System) is software for centrally storing, managing, and versioning documents. A DMS replaces unstructured file-share storage with controlled processes for creation, approval, archiving, and deletion.
In the ISMS context, a DMS supports document control per ISO 27001 (clause 7.5): policies, procedures, and records are versioned, routed through approval workflows, and archived in a tamper-proof manner. Good DMS solutions also provide access control, audit trails, and automated retention periods. This makes it verifiable who approved which document version and when.