An EDMS should allow storing and managing documents in multiple formats, including text, audio, video, and image files. It should have an advanced search engine to scan and retrieve documents regardless of the format and should allow tagging with keywords for improving searchability.
Security is another important feature to restrict access only based on permissions. Collaboration across teams based anywhere is also a key feature of a good EDMS.
Audit Trail to trace changes, by whom and when is an essential feature for both security and compliance.