AD RMS is a Windows Server feature that can help prevent confidential information (Outlook emails, Word, Excel, PowerPoint, XPS documents) from being distributed illegally to the outside world. We can have the users manually turn on protection before sharing these information internally, or we can have these information automatically protected when sending emails internally or when puting confidential documents into some folders on File Servers or SharePoint Server.

* AD RMS overview slide download (2M)

* AD RMS and File Classification Infrastructure (FCI) (using AD RMS Bulk Protection Tool) article