With Microsoft taking Ajax to new heights and quickly coming up with newer releases, Ajax is all set to become the next-generation technology of choice for building fast and responsive web applications. In this hour, we discussed the various set of technologies that make up Ajax, the key ingredients of ASP.NET Ajax, the major goals of ASP.NET Ajax, and why Ajax has become indispensable in web application development communities worldwide. Apart from this, we've also learned how to install ASP.NET Ajax and what comes with it. In the next hour, we'll explore the internals of the ASP.NET Ajax architecture. So, stay tuned!