Overseas IT Solution on Instagram: "REST vs GraphQL vs gRPC — what do you pick at scale? At scale, there is no single winner. The right choice depends on traffic pattern, latency needs, and who consumes the API. 1. REST We use REST when: • APIs are public-facing • Clients are web, mobile, third-party • Caching, CDN, and simplicity matter ✅ Easy to scale horizontally ✅ Works great with HTTP caching ❌ Over-fetching / under-fetching at complex UIs 👉 Best for: Public APIs, mobile apps, simple CRUD