Ajax, or Asynchronous JavaScript and XML, exploded onto the scene in the spring of 2005 and remains the hottest story among web developers. With its rich combination of technologies, Ajax provides a strong foundation for creating interactive web applications with XML or JSON-based web services by using JavaScript in the browser to process the web server response. (Ajax Design Pattern)

The “Ajax burst onto the Web development scene by offering highly interactive, desktop-like Web applications that can be deployed through any modern Web browser without the need for special plug-ins,” according to Ryan Asleson on his book “Foundation of Ajax“. It is said that the “AJAX is built on existing Web technologies such as JavaScript, HTML, and CSS, and it is used in conjunction with the favorite server-side language.”
“Ajax has broken the client-server barrier by decoupling the client from the server,” according to Christian Gross on his book Ajax Patterns and Best Practices.

Asynchronous programming lets you turn your own web sites into smooth, slick, responsive applications that make your users feel like they’re back on the information superhighway, not stuck on a dial-up backroad. (Head Rush AJAX). So those who are sick of creating web sites that reload every time a user moves the mouse and tired of servers that wait around to respond to users’ requests for movie tickets, AJAX will of great help to them.

Ajax provides web developers with the ability to create more sophisticated and responsive user interfaces and break free from the “click-and-wait” standard that has dominated the web since its introduction. (Professional Ajax)

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