AJAX is a technique for creating fast and dynamic web pages. AJAX allows web pages to be updated asynchronously by exchanging small amounts of data with the server behind the scenes.
AJAX represents Asynchronous JavaScript and XML. It is utilized for permitting the customer side of an application to communitcate with the server side of the application. Prior to AJAX, there was no chance to get for the customer side of a web application to discuss legitimately with the server. Rather, you would need to utilize page loads