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What are the main features Next.js provides out of the box?

Next.jsMiddle~1 min read
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Next.js is not just a React framework, but a set of ready production features that usually have to be assembled manually. Here are the key things it gives out of the box.

1. Choice of rendering (SSR / SSG / ISR)

You can choose a strategy for each page:

  • SSR - server-side rendering on every request
  • SSG - HTML generation at build time
  • ISR - updating static pages without a full rebuild

This solves problems of SEO, load speed, and scalability.

2. App Router and file-based routing

  • The URL is formed by folder structure
  • layouts, nested routes, loading/error states
  • less code -> fewer bugs
txt
app/ └─ blog/ └─ [slug]/ └─ page.tsx

3. Server Components and Client Components

  • Server Components - run on the server
  • Client Components - interactivity in the browser

Advantages:

  • less JS in the browser
  • faster loading
  • direct access to the DB and secrets on the server

4. Backend inside Next.js

Without a separate backend:

  • API routes
  • Server Actions
  • cookies / headers
  • working with the DB
  • authorization

Great for fullstack applications and MVPs.

5. Performance optimization

Next.js automatically does:

  • code splitting
  • lazy loading
  • route prefetching
  • HTML streaming
  • partial hydration

Without manual Webpack/Vite configuration.

6. Image and font optimization

  • <Image /> - resizing, lazy loading, WebP/AVIF
  • <Font /> - local fonts without CLS

Less weight -> higher Core Web Vitals.

7. SEO and metadata

  • generation of <meta>, Open Graph, Twitter cards
  • dynamic title/description
  • sitemap, robots.txt

And all of this at the page or layout level.

8. Flexible deployment

  • Node.js
  • Edge runtime
  • serverless
  • CDN

You can deploy anywhere, not just to Vercel.

9. Dev experience

  • Hot Reload
  • strict TypeScript integration
  • ESLint + build checks
  • clear errors and traces

Short version for an interview

Next.js provides server-side rendering, file-based routing, backend capabilities, performance optimization, and SEO out of the box, allowing you to build scalable fullstack applications based on React.

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