This is exactly where most backend complexity should be handled today. A well-designed BFF (Backend-for-Frontend) contract isn’t just about aggregating requests—it’s about intelligently shaping data per client so each frontend gets only what it needs, nothing more. That means reducing over-fetching, decoupling UI changes from core services, and optimizing latency by parallelizing downstream calls. The real challenge is keeping the contract stable while allowing client-specific flexibility without turning the BFF into a monolith. When done right, it becomes a thin but powerful orchestration layer that dramatically improves frontend velocity and system scalability.