The MCSA: Windows Server 2008 certification is based on Windows Server 2008 R2 technology and is a prerequisite to the MCSE: Private Cloud certification and The MCSA: Windows Server 2012 certification is based on Windows Server 2012 technology and is a prerequisite to the MCSE: Private Cloud, MCSE: Server Infrastructure, MCSE: Desktop Infrastructure, MCSE: Messaging, MCSE: Communication, and MCSE: SharePoint.