REST or GraphQL: Stop Overthinking It
The REST vs GraphQL debate has wasted more engineering meeting time than almost any other technical decision. Here's the practical breakdown for SaaS teams in 2025.
REST: The Default for Good Reason
REST (Representational State Transfer) is: well-understood by every developer, natively supported by every HTTP client, easy to cache (CDN + browser cache just work), simple to secure with standard auth headers, and observable with any logging tool.
REST is the right choice when: you have a simple, resource-oriented API, you need aggressive caching, your API is public/third-party, or your team is small and fast iteration matters more than flexibility.
GraphQL: When Flexibility Justifies Complexity
GraphQL lets clients request exactly the data they need. It solves: over-fetching (getting more data than needed), under-fetching (needing multiple API calls for one screen), rapidly evolving frontend requirements (mobile vs web need different data shapes).
GraphQL wins when: you have multiple client types (iOS, Android, web) with different data needs, your data is highly relational (social graphs, complex SaaS data models), you have a large team with separate frontend/backend owners.
The 2025 Answer: tRPC for Most SaaS
For Next.js SaaS products, the best answer in 2025 is often neither REST nor GraphQL — it's tRPC. tRPC gives you end-to-end TypeScript type safety between client and server, without any schema definition files, code generation, or client libraries. It's effectively type-safe RPC over HTTP, and for full-stack TypeScript teams it eliminates entire categories of bugs.
Decision Framework
- Full-stack Next.js team → tRPC
- Public API with third-party consumers → REST
- Multiple mobile/web clients with different data needs → GraphQL
- Anything with external integrations (webhooks, Zapier) → REST