As an expert in web technologies, I can tell you that Ajax is not a programming language. Instead, it is a technique for creating interactive web applications. The term "Ajax" is an acronym for Asynchronous JavaScript and XML, which reflects the original use of JavaScript to request data from servers and the XML format for that data. However, the use of XML has become less common, and JSON is often used instead. Ajax allows web pages to communicate with servers asynchronously, meaning that it can send and retrieve data in the background without interfering with the display and behavior of the existing page. This leads to a smoother and faster user experience. read more >>

Ajax is not a programming language or a tool, but a concept. Ajax is a client-side script that communicates to and from a server/database without the need for a postback or a complete page refresh.read more >>