What is Ajax? Understanding Asynchronous JavaScript and XML

Ajax, or Asynchronous JavaScript and XML, is a set of web development techniques used on the client-side to create asynchronous web applications. It allows web pages to be updated asynchronously by exchanging small amounts of data with the server behind the scenes, without interfering with the display and behavior of the existing page. This significantly improves the user experience by making web applications more responsive and dynamic, avoiding the need for a full page reload for every user interaction.