ASP.NET AJAX integrates client script libraries with the ASP.NET 2.0
server-based development framework. 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. However,
ASP.NET AJAX isn’t just for ASP.NET development. You can take advantage of the
rich client framework to easily build client-centric Web applications that
integrate with any backend data provider.
ASP.NET AJAX enables you to take full advantage of the capabilities of
the browser to deliver richer Web experiences that work on any modern
browser
ASP.NET AJAX enables ASP.NET developers to enrich their existing Web
applications with incredible ease
ASP.NET AJAX includes a rich client-side JavaScript framework that
enables easy creation and reuse of script components and rich client-side
behaviors.
ASP.NET AJAX makes it super easy to consume services from ASP.NET and to
build composite applications from services on the programmable Web.