This book is useful to get insight and a summation of what Azure is about, what you can use it for and why Azure is the most complete cloud.
The book is not detailed about “how to” but most FAQs you have this book should be able to answer, for example.
*Limitations
*Security
*Pricing
*Support
*Competition comparison
*A lot of links to getting started information
*Microsoft partner specific information
Do not forget to look at some of my previous post regarding learning Azure http://azurefabric.com/category/knowledge/
Here are some other great resources that can assist you with your cloud strategy.
Datacenter Extension Reference Architecture Diagram
Look at this video Walk through of how to use the diagram
If you are using Visio then this is something to consider.
Microsoft Architecture Blueprints
http://azure.microsoft.com/en-us/documentation/articles/architecture-overview/
Posterpedia (interactive posters)
And finally a great App that I use to show with visual posters how Azure and other Microsoft products works.
http://www.serverposterpedia.com/
