Next.js is a web framework developed using React, JavaScript, and TypeScript. It supports various rendering modes such as server-side rendering (SSR), static site generation (SSG), and client-side rendering (CSR) for React applications. This allows Next.js to utilize different rendering techniques to optimize user experience.
Next.js is commonly preferred for developing modern and performance-focused web applications. With features like SSR and SSG, it enhances SEO performance while easing development with TypeScript support and client-side routing.