API Routes & Server Actions

Summary

Next.js's built-in ways to write backend logic inside the same project as your frontend — API routes for traditional endpoints, Server Actions for form-submission-style mutations callable directly from components.

• 1Build a simple API route and call it from a client component.
• 2Build a form that submits directly to a Server Action instead of a separate API call.
• 3Compare when you'd reach for one vs the other.