Next.js is a framework built on top of React that extends its capabilities, allowing for faster loading of applications, improved SEO ranking, and easier styling. With the release of Next.js v10, there are new features that enhance website performance. To get started with Next.js, you can use the create-next-app CLI tool and run the project with npm run dev. The basic project structure in Next.js includes folders like .next, pages, api, styles, and more. Next.js supports client-side rendering, server-side rendering, static site generation, and incremental static regeneration for data fetching. In Next.js v10, there are exciting updates such as a new Image component for optimized rendering, built-in internationalization support, improvements to the Link component, and new options for static page generation.

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Next.js is a framework that extends React's capabilities, improves website performance, and offers new features in version 10.

Next.js Fundamentals and New Features for React Devs

This one is deprecated. Current version of Next.js is 14.1
Please everyone recommendation is to use Next.js 13+ with app directory.