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- [Functions API Reference](/docs/functions/functions-api-reference.md): Functions are defined similar to a Route Handler in Next.js. When using Next.js App Router, you can define a function in a file under
- [Vite + Nitro on Vercel](/docs/frameworks/full-stack/vite-with-nitro.md): Nitro is a universal server toolkit that adds serverside rendering (SSR), API routes, server middleware and other backend capabiltiies to any Vite
- [Getting started with Vercel Functions](/docs/functions/quickstart.md): In this guide, you'll learn how to get started with Vercel Functions using your favorite frontend framework (or no framework). AI Assistance Copy

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