Ajax stands for Asynchronous JavaScript and XML. It’s a way for web pages to communicate with a server and update parts of a web page without needing to reload the entire page. Think of it as quietly whispering to the server to get new information or send data while you continue browsing without interruption. For example, when you use a search engine and see suggestions pop up as you type, or when you watch new posts appear on social media without clicking refresh, that’s Ajax in action.