Rich Internet applications (RIA) are web applications that have the features and functionality of traditional desktop applications. RIAs typically provide a "no-refresh" look to the user interface and provide what is now being known as HDuX - High Definition User eXperience . For an end user, RIA apps bring the best of client-server and web technology and for most ISV's and E-businesses , its now imperative to adopt RIA technology for their next release. It provides an end user experience similar to client/server applications supported by rich graphical user interface. Highly responsive performance and reduced network load. Higher, richer and easier levels of interactive functionality. Enabling true service oriented architectures on RIA platforms like FLEX / AJAX / APOLLO Flex