Really...? No iCloud without Ballmer & Co's reliable systems? Shhhh!!!! Don't tell everyone but iCloud was still running on February 26.
Microsoft Azure Falls Down, Goes Boom
http://gigaom.com/cloud/microsoft-azure-falls-down-goes-boom/
"That news comes as Microsoft is trying to pitch two-year-old Azure as a safe and reliable platform for consumer and business applications."
I am sure Steve's plan before his passing was to invest billions into his data centers and then leave his investment in the hands of the ever secure and robust systems of Microsoft.