Ajax Web Programming
The name is an acronym standing for Asynchronous JavaScript and XML. Ajax is asynchronous in that loading does not interfere with normal page loading. Javascript is the programming language that Ajax function calls are made in. Data retrieved using the technique is commonly formatted using XML, as reflected in the naming of the XMLHTTPRequest object from which Ajax is derived.
Ajax is a cross-platform technology usable on many different operating systems, computer architectures, and Web browsers as it is based on open standards such as JavaScript and XML, together with open source implementations of other required technologies.