Axios is a popular JavaScript library used for making HTTP requests. It simplifies the process of sending and receiving data from a server, allowing developers to easily interact with APIs. Axios supports promises, making it easier to handle asynchronous operations and manage responses. One of the key features of Axios is its ability to automatically transform JSON data, which is commonly used in web applications. It also provides built-in support for request and response interceptors, enabling developers to modify requests or responses before they are handled. This flexibility makes Axios a preferred choice for many developers.