Asynchronous JavaScript and XML (AJAX)

Asynchronous JavaScript and XML (AJAX) are web development techniques that make web applications and pages faster and more interactive. They allow users to update parts of content without reloading the page. 

Asynchronous JavaScript and XML (AJAX) are web development techniques that can be used to make creative and interactive web apps by using programming tools like JavaScript, dynamic HTML(DHTML), and Extensible Markup Language(XML).  

It’s independent of web server software and allows you to change parts of any webpage without having to reload the page. It also displays the results quickly for users. Data exchange also becomes possible as it uses a JavaScript function to create XMLHttpRequest on the browser. It gathers the information in XML format, and then the request objects are sent to the web server. The web server responds and proceeds with the requested data, updating the changes with the latest data without the need to refresh the page. Thus, they are known to be more efficient than the conventional web requests.