APIs run the world — but not all APIs work the same way. In this 20-minute breakdown, we cut through the noise and explain the four major API styles every developer, architect, and engineer must understand: ✓ REST — the classic resource-based web API ✓ GraphQL — flexible, client-driven queries ✓ SOAP — enterprise-grade, contract-heavy XML APIs ✓ gRPC — ultra-fast, binary protocol for microservices We also cover: • What APIs actually are • How frontend and backend communicate • HTTP methods (GET, POST, PUT, DELETE) • Requests, responses, headers, status codes • JSON vs XML vs Protobuf • Streaming, real-time data, type systems • When to choose each API style • Strengths, weaknesses, and real system design tradeoffs If you're learning backend development, preparing for interviews, or designing systems — this video gives you the complete picture. #API #WebDevelopment #Backend #SystemDesign #Programming #REST #GraphQL #soap #gRPC