Next.js is a modern React framework that enables developers to build fast, scalable, and SEO-friendly web applications with minimal configuration. It offers built-in features such as server-side rendering (SSR), static site generation (SSG), and incremental static regeneration (ISR) to improve performance and search engine visibility. With automatic code splitting, file-based routing, API routes, and optimized asset handling, Next.js allows for highly efficient and maintainable web apps. Its zero-config setup, hybrid rendering capabilities, and strong community support make it an ideal choice for both small projects and large-scale applications, delivering seamless user experiences across devices.