I bought this book expecting to learn how to move my website into the cloud. I already had a vague understanding of Amazon's AWS, and was looking for a straightforward explanation of the best practices and methods for moving away from a standard hosting setup. However, this book provided NONE of that.
Get this book if you want to learn more about each of the major components of AWS, and write PHP scripts to do simple operations. But do NOT get this book if you're looking for practical advice on how to host a web site on AWS. For example, there's no discussion about using SSL certificates within AWS, only a couple of paragraph about public IP's and directing your DNS entries to it, nothing about any considerations for Apache, Tomcat, Jetty, or other servers. The coverage is pretty much 98% all about how to do the very basic operations with AWS.
Summary: You can learn everything this book presents for free on the Amazon's AWS website. If you're looking to move an existing website to AWS, this book won't really give you any help unless you don't even know what AWS is.