Ajax the future of web technology

With the invention of Ajax, now we have a complete different system model.
AJAX (Asynchronous JavaScript And XML)

Since the start of Web programming, numerous tradeoffs have existed between Web applications and desktop applications. For example, it has been generally accepted that Web applications don't provide the same type of rich user interface as desktop applications. On the flip side, Web applications are platform independent and provide an easier development mechanism. One area that's been a continuous battleground for Web developers has been the seemingly simple task of providing more responsive applications.
Traditionally, a response to a user's input could only be retrieved by submitting a new request to the Web server. In some cases, developers could load all responses on the client (using JavaScript) and provide a better user experience. A common example of this technique is to dynamically load a list of states or provinces, based on a selected country. Unfortunately, in many cases, neither posting back nor loading everything into JavaScript felt correct. Either posting back created too much of a UI disconnect, or an unmanageable amount of data was required on the client (which often resulted in less-than-readable JavaScript). AJAX provides a new in-between alternative, capable of leveraging the server-based application while maintaining a responsive and slick feel.