What is the main purpose of the AJAX technique in web development?

AJAX (Asynchronous JavaScript and XML) allows web applications to send and retrieve data from a server asynchronously without reloading the entire page. This makes web pages faster, more dynamic, and interactive because the page content can be updated without a full page refresh. For instance, when a user fills out a form and the form is submitted via AJAX, only the relevant section of the page is updated based on the server’s response. This technique is widely used for functions such as live search, real-time content updates, and background data loading. Why Other Options Are Wrong: A) To refresh the entire webpage without losing the current state: This is incorrect because AJAX updates parts of the webpage without refreshing the entire page. C) To validate form data before submitting it to the server: While form validation can be handled using JavaScript, this is not the purpose of AJAX. D) To encrypt data being transmitted between the client and server: AJAX is not inherently responsible for encryption; HTTPS is used for secure communication. E) To manage the source code versioning of web applications: This is incorrect as Git or similar version control systems manage source code versioning, not AJAX.