Webpack is a powerful tool used in web development to bundle JavaScript files and other assets like CSS and images. It takes multiple files and combines them into a single file or a few smaller files, which helps improve the loading speed of web applications. By managing dependencies and optimizing resources, Webpack makes it easier for developers to maintain and scale their projects.
In addition to bundling, Webpack offers features like code splitting, which allows developers to load only the necessary code for a specific page, and hot module replacement, enabling real-time updates during development. These features enhance the overall development experience and performance of web applications.