At Adobe's website you can read the following about Flex 2.0: "Adobe Flex 2 software is a rich Internet application framework based on Adobe Flash that will enable you to productively create beautiful, scalable applications that can reach virtually anyone on any platform. It includes a powerful, Eclipse based development tool, an extensive visual component library, and high-performance data services enabling you to meet your applications' most demanding needs." We will share our experiences and best practices on How to build Rich Internet Applications (RIA's) based upon Flex2.0 within a Spring and Hibernate enabled J2EE architecture.