VuePress is a Vue-powered static site generator created by Evan You to address the documentation needs of Vue-based projects. It allows users to build single-page applications with pre-rendered static HTML from Markdown files, leveraging Vue, VueRouter, and Webpack. VuePress offers several features, including the ability to write Vue inside Markdown files, built-in Markdown extensions, a default theme optimized for technical documentation, and the capability to create custom themes. It supports service workers for offline use and integrates with Google Analytics. Users can get started by installing VuePress globally or adding it to an existing project, after which a configuration file can be set up to enable features like a homepage, sidebar, and navigation links. The default theme can be customized using a stylus preprocessor, and deploying a VuePress site involves building the production-ready site and deploying it like any other static website.