Definition
A single entry point in front of many services handling routing, auth, rate limiting and aggregation.
How it works
Clients talk to one endpoint; the gateway authenticates, throttles, terminates TLS, and routes to the right backend (sometimes fanning out and combining responses). Centralises cross-cutting concerns so services stay focused — but can become a bottleneck or a deployment chokepoint if it grows too smart.
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Common questions
What is API Gateway?
A single entry point in front of many services handling routing, auth, rate limiting and aggregation.
How does API Gateway work?
Clients talk to one endpoint; the gateway authenticates, throttles, terminates TLS, and routes to the right backend (sometimes fanning out and combining responses). Centralises cross-cutting concerns so services stay focused — but can become a bottleneck or a deployment…
What is API Gateway used for in system design?
Clients talk to one endpoint; the gateway authenticates, throttles, terminates TLS, and routes to the right backend (sometimes fanning out and combining responses). Centralises cross-cutting concerns so services stay focused — but can become a bottleneck or a deployment…