As the internet user experience (UX) progresses, more and more users are demanding and expecting that their custom built business applications provide the same UX as what they see on the internet every day. ASP.NET AJAX UNLEASHED empowers ASP.NET developers to easily provide this type of experience with minimal code. As Microsoft.com puts it: "This new Web development technology extends ASP.NET, offering the interactive user interface benefits of AJAX with a programming model that is more familiar to ASP.NET developers, making it very easy to add AJAX to your applications quickly and with minimal effort." Author Rob Foster has built Ajax-enabled web apps for a number of major corporations, and uses the experience he has gained there to explain concisely, clearly, and completely what ASP.NET developes need to learn in order to start taking advantage of the rich opportunities made possible by ASP.NET Ajax.