What does AJAX stand for?

AJAX stands for Asynchronous JavaScript and XML. This is a technique used in web development that allows web applications to send and receive data asynchronously, meaning that it can update parts of a web page without needing to reload the entire page.

The term "asynchronous" refers to operations that can occur independently of the main program flow, enabling interactive web applications. JavaScript handles this communication, making it possible to fetch or send data to a server in the background while a user continues to interact with the web page. XML was commonly used for data interchange in the early use of AJAX; however, it can now work with other data formats as well, such as JSON.

The incorrect options do not accurately represent what AJAX is. Options like Advanced Java Applications Extension and Automated Java Application Xchange are not established terms associated with web development, while Active JavaScript XML does not capture the essence of AJAX, particularly the "asynchronous" aspect that is crucial for its functionality.