AJAX is the acronym for Asynchronous JavaScript and XML. It is primarily used for developing dynamic web applications. The benefit in AJAX is that when using it, you can retrieve asynchronous data without reloading the page that is viewed by a visitor at the time. The JavaScript is akin to the backbone of the application since most of its fundamental functions are taken care of by it. This, in turn, makes the application turn out like a desktop program rather than one that is web-based.