@hackproduct9: Most engineers learn API Gateways as just another box in a system design diagram. That’s a mistake. An API Gateway is the reason your frontend doesn’t need to know where every service lives, how users are authenticated, or which backend instance should handle a request. It becomes the single entry point that handles routing, security, rate limiting, aggregation, and reliability for your entire platform. Without it: Frontend → 10 services With it: Frontend → API Gateway → 10 services Simple for clients. Flexible for engineers. Scalable for businesses. If you’re preparing for system design interviews, understanding why an API Gateway exists is far more important than memorizing the definition. Build systems that hide complexity. That’s what great architecture does. #SystemDesign #APIGateway #Microservices #SoftwareEngineering #BackendEngineering

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Sunday 21 June 2026 01:29:15 GMT