Before writing about AJAX, i want to spell out few words on Web 2.0. When you talk about AJAX, you also have the reason to hear the term Web 2.0. The internet experts says that, we are in the second phase of internet era, so called Web 2.0. The first phase of the internet era is headed by Netscape and its outplayed by Microsoft with its InternetExplorer(IE). But this time Google tossed the coin in right side to take the control of internet users from Microsoft and Yahoo.
Lets move into the AJAX, its founded by Microsoft in the late nineties(1998) and they call it as ActiveX objects. Introduced in the Internet Explorer 5.0. Later this object is included in the modern web browsers Mozila,FireFox,Opera,etc. As it become more popular amoung web developers, Mr. Jesse James Garrett from www.adaptivepath.com is named it as AJAX. He is also called as the Father of AJAX.
Cool links to learn AJAX :