Ajax a short form of Asynchronous JavaScript and XML is a set of techniques used by many modern and popular web sites. This technique allows portions of a Web page to be updated without refreshing the entire page and to increase the web page's interactivity, speed, and usability that is a significant advance in the development of websites and web-based applications. For example, a site might allow you to rate a product or item by clicking on a star image. With Ajax, your vote could be registered without having to load the entire page again. If you already know about Javascript, HTML, CSS and XML then you will need to spend your 1 hour to start with AJAX. Here is the list of 23 Ultimate Collection Of Useful Ajax Tutorials & Resources that includes some useful tutorials and few great resources like script, examples etc. We are hoping that you will learn further on Ajax after reading out this post.Google AJAX APIsGoogle's AJAX APIs let you implement rich, dynamic web sites entirely in JavaScript and HTML. You can add a map to your site, a dynamic search box, or download feeds with just a few lines of JavaScript. If you want to play around with them, try using the Interactive Code Playground.