Designing a rich Internet application (RIA) can test even an experienced design team. The hardest challenge is to blend Web and desktop paradigms to create a responsive and intuitive experience. Some paradigms that exist in the desktop environment are ill-suited for the Web, while many of the Web paradigms people are familiar with (paging, explicit refresh) are no longer necessary with RIA technologies like Flex and Ajax. As this space matures, we are learning more and more about which boundaries can be pushed, and which patterns transcend time and technology.
