Asynchronous JavaScript and XML (AJAX) is one of the driving factors o

Asynchronous JavaScript and XML (AJAX) is one of the driving factors in the Web 2.0 movement that has occurred over the last few years. The term AJAX was initially defined by Jesse James Garrett in 2005 as a collection of different web technologies. These technologies allow browsers to privately communicate with web servers without the need of user interaction to send, process, parse, and retrieve data.