Where is Windows Server 2008 SP1 ?

While preparing a Windows server 2008 virtual machine and as usual I was just looking up Microsoft.com for patching my newly installed operating system(to get the bug fixes).

Interestingly I was not able to find Windows Server 2008 SP1, there is only SP2 available and came to know that the initial OS installation includes the SP1.

FAQ Section of Windows Server 2008 SP1 clarifies the doubt,Following text taken from the FAQ

Are there any prerequisites for SP2?

You must have Windows Vista with SP1 or Windows Server 2008 installed on your computer before installing Service Pack 2. (Windows Server 2008 shipped with Service Pack 1 included.)

Screen shot after the clean installation of Windows server 2008