Can Active Directory on Windows Server 2003 or 2008 scale to support millions of users for a SharePoint 2010 implementation? Not total objects but total users so there would be additional group objects, etc. Can SharePoint 2010 support this many users as well?
If the answer to both questions is yes are there any implications, gotchas or issues concerning the support of this large a user base both within AD and SharePoint?
Thanks in advance!