Vito Chin has posted a quick mention of the book that he and Ivo Jansch wrote together about cloud computing and how PHP fits into the picture - PHP Development in the Cloud.

I had a conversation with Ivo at the Claddagh Ring of Hendon and we'd decided to write this book together. We wanted to clarify where cloud computing will intersect with the internet & the WWW; and parts of it that makes having a different term to describe the cloud necessary. We do so from a PHP perspective because it is the language for the web that we like the most.

Here's the book's summary:

Most developers gloss over when they hear "the cloud" as the term has been appropriated by marketing types and has very little true meaning anymore. In this book, Vito and Ivo strip bare the buzzwords and help PHP developers figure out what the cloud is actually about and how they can take advantage of what cloud computing has to offer. After reading this book, you will not only have a clear picture of what cloud computing is, but you’ll also be able to utilize the various cloud services that are out there.