ASP.NET AJAX is an ASP.NET framework from Microsoft for quickly creating interactive and highly-personalized Web experiences that work across all the most popular browsers.

With ASP.NET AJAX, you can:

• Create next-generation interfaces with reusable AJAX Hosting components.
• Enhance existing Web pages using powerful AJAX controls with support for all modern browsers.
• Continue using Visual Studio 2005.
• Access remote hosting services and data directly from the browser without writing a lot of complicated script.
• For more information, see the Official Microsoft ASP.NET AJAX site.