System requirements:
- Supported Operating Systems are Windows 7, Windows Vista, Windows Vista SP1, Windows XP SP2+, Windows Server 2003 SP1+, Windows Server 2008, Windows Server 2008 R2.
Not sure why this got downvoted ... MS seems to avoid the issue in their pages, while touting Joomla, WordPress etc. as open source; but you need Windows on both the frontend (understandable, why develop tools for other OSes and not yours) and the backend - so basically this is embrace and extend applied to the Web.
