Ajax, or Asynchronous JavaScript and XML, is a term describing the latest rage in web development. Ajax is used to create interactive web applications with XML-based web services, and using JavaScript in the web browser to process the web server response. End users see a more responsive application on the web, often with client-like functionality. Ajax reduces the amount of data interchanged between the web browser and web server, which saves processing and speeds up the web experience. Written by a team of award-winning authors, Head Rush Ajax takes the reader beyond basic web development with DHTML and JavaScript and explains how asynchronous data requests and more powerful event models can be used in the Ajax methodology.