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Ajax stands for Asynchronous JavaScript and XML. It is a web development technique that allows for asynchronous communication between a web browser and a server. With Ajax, you can update parts of a web page without having to reload the entire page, resulting in a more responsive and interactive user experience.

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Ajax uses a combination of technologies, including JavaScript, XML (although nowadays JSON is more commonly used), HTML, and CSS. It leverages the XMLHttpRequest object in JavaScript to make asynchronous requests to the server and retrieve data in the background.
The main advantage of Ajax is that it enables data retrieval and updating without interrupting the user's interaction with the web page. For example, when you submit a form using Ajax, the form data can be sent to the server and processed without refreshing the entire page. The server can then send back the updated data, which can be dynamically displayed on the web page.
Ajax has become an essential part of modern web development and is widely used in various applications, such as dynamic web forms, live chat systems, real-time data updates, and interactive web applications. It allows for a smoother user experience by reducing page load times and providing more dynamic content without full page reload.

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