Go below the surface of ASP.NET AJAX and see how the Microsoft AJAX Library and the ASP.NET AJAX server controls come together to create a rich platform for developing more immersive, responsive and interactive Web applications. Learn about how ASP.NET AJAX uses JSON serialization and the JavaScript proxies that are created for accessing Web services. The Microsoft AJAX Library provides an asynchronous request lifecycle; learn tips for working with the UpdatePanel control and ways to deploy scripts for greater performance. * Jeff Prosise