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Full Stack Web Development · Module 8 of 10

APIs and integration

Connect front end, back end and third-party services.

📖 Key ideas

  1. Design REST endpoints: /api/products, /api/products/:id.
  2. Return proper status codes and JSON errors.
  3. Handle CORS for browser calls across domains.
  4. Integrate services: payments (Razorpay/Stripe), email, maps, storage.
  5. Document APIs with OpenAPI; test with Postman.
💡 Real-life example: APIs are waiters carrying orders between the dining hall and kitchen, plus outside suppliers.
REST endpointURL + method for a resource
CORSCross-Origin Resource Sharing
WebhookServer-to-server event callback
OpenAPIAPI documentation standard