Anthony Franco & The EffectiveUI Team 
Flex 3 Early Evaluation: Assessing Flex and Your Project Needs [PDF ebook] 

Evaluating any new technology can be a challenge. This Short Cut is designed to help web application developers (and their team managers) understand if Flex is the right technology for their company or client. Although the authors of this book have a strong understanding of the Flex framework, this isn’t a sales pitch for Flex. The authors believe that Flex is a good tool to solve many business problems, but it is not a cure-all.After reading this material, you’ll know what’s good about Rich Internet Applications. You’ll know the capabilities of Flex 3, how Flex works, and how much it costs. We’ll tell you about the challenges you’ll face in developing with Flex, and show you the steps you’ll take to create and deploy a Flex 3 application.