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Edge and Node.js Runtimes

Next.js has two server runtimes you can use in your application:

  • The Node.js Runtime (default) which has access to all Node.js APIs and compatible packages from the ecosystem.
  • The Edge Runtime which contains a more limited set of APIs.

Use Cases

  • The Node.js runtime is used for rendering your application.
  • The Edge runtime is used for Middleware (routing rules like redirects, rewrites, and setting headers).


  • The Edge runtime does not support all Node.js APIs. Some packages will not work. Learn more about the unsupported APIs in the Edge Runtime.
  • The Edge runtime does not support Incremental Static Regeneration (ISR).
  • Both runtimes can support streaming depending on your deployment infrastructure.