CMS IS Used for Content Management (USUALLY
Internet / Extranet / Intranet -
http://www.microsoft.com/cmserver/
SPS IS Used for Portals and Collaboration (USUALLY EXTRANET / INTRANET) -
http://www.microsoft.com/sharepoint/
The CAN Be Integrated with The Connector for SharePoint Technology Technologies -
http://www.microsoft.com/cmserver/default.aspx?url=/cmserver/downloads/sharePointConnector