Designing for Cloud-Optimized Architecture by David Chou
A colleague of mine David Chou, who I have great respect for, has written an excellent blog post on cloud-optimized architecture subject:
https://blogs.msdn.com/b/dachou/archive/2011/01/23/designing-for-cloud-optimized-architecture.aspx.
Good read for architects and decision makers building cloud solutions.
-Hanu