What is the `server/` directory in Nuxt.js?

The server/ directory enables Nuxt.js to function as a full-stack framework by providing a built-in server powered by Nitro. Inside it, server/api/ contains API route handlers — a file at server/api/users.get.ts handles GET requests to /api/users. The HTTP method is specified in the filename (.get, .post, .put, .delete). server/middleware/ contains server-side middleware, and server/utils/ holds utilities auto-imported within the server context. This makes Nuxt capable of replacing a separate Express or Fastify backend for many use cases.