Next.js is a full stack web framework designed for building applications with React. It functions as a React web framework that integrates a server-side rendering engine, a static site generator, and a dedicated application router to manage page-based navigation and dynamic URL segments.
The framework enables the development of both frontend user interfaces and backend server logic within a single codebase. It provides a unified environment for full stack web development, allowing frontend and backend components to be built and managed together.
The system focuses on frontend performance optimization and reducing build times. It covers several rendering strategies, including static site generation, server-side rendering, and incremental static regeneration, alongside automated asset bundling and component-level code splitting.