Rich Internet Applications (RIA) is the web based applications that have user interface of traditional desktop based applications with better interactivity and data communication. RIAs utilize relatively robust client-side rendering engines that can present very dense, responsive, and graphically rich user interfaces. It allows data to be cached in the client, allowing a vastly more responsive user interface and fewer round trips to the server than with HTML

We use AJAX (Asynchronous Java and XML) to develop such highly interactively web applications.

• It separate data from user interfaces
• which helps to build the website easy and fast
• It provides better user interfaces and more interactivity
• Applications developed are no longer limited for particular OS or Web Browser
• It has an ability to refresh a small section of a page without needing to reload entire page. Hence, increases speed and response time.