It isn't some new technology but it is a new way to use existing methods to build rich, user-friendly, desktop style of interacting with a web page.
A good example of an AJAX application is Digerati's Shopping Cart build into myCommerce for Goodbuddy Sports website. Notice the page doesn't 'reload' with information but appears to be working in the background? This is pro, it becomes RICH.
Javascript triggers an XML request to the server in the background and makes XHTML/CSS changes in real-time. You don't have to install it, you don't have to enable it and it doesn't have browser compatibility issues.
Technologies it uses are:
- JavaScript
- XML
- HTML
- CSS
- Dynamic Server Side Technology (ASP.net, ASP, PHP, JSP etc.)
