Ant Design is a design system created by Alibaba that provides a set of high-quality components and design guidelines for building user interfaces. It aims to improve the user experience by offering a consistent and visually appealing design across web applications. The framework is built with React in mind, making it easy for developers to integrate into their projects. It includes a variety of customizable components, such as buttons, forms, and tables, which help streamline the development process and ensure a cohesive look and feel throughout the application.