Vercel Feature Lab

How this app runs

1. A request reaches Vercel's network, which routes it to this Next.js app (App Router).
2. Pages are Server Components: they render on the server, so they can read headers, secrets and data directly. Only interactive pieces ship JavaScript to the browser.
3. With Cache Components, each page is a static shell served instantly from the edge, and anything that needs the live request streams in afterwards.
4. Back-end code lives in route handlers (app/api/*/route.ts) and Server Functions, which Vercel runs as serverless functions.