➤ API Gateway Architecture A layered security and operational model to manage, monitor, and transform API traffic. 1️⃣ Administrative Layer → Manages API lifecycle: publishing, monitoring, versioning, and analytics. → Provides developer portals, usage plans, throttling rules, and logging. → Tools: AWS API Gateway, Apigee, Kong Admin UI. 2️⃣ Network Security Layer → Controls traffic at the edge using firewalls, DDoS protection, and IP whitelisting. → Enforces TLS/SSL, API keys, and traffic filtering. → Integrates with WAFs, CloudFront, and Zero Trust models. 3️⃣ Access Layer → Manages authentication (e.g., API Key, JWT, OAuth2) and authorization (RBAC/ABAC). → Validates incoming requests against policies and identity providers (e.g., Cognito, Okta). → Enables rate limiting, quotas, and access control lists. 4️⃣ Transformational Layer → Transforms payloads (JSON ↔ XML), maps protocols (REST ↔ SOAP), and modifies headers. → Enables API versioning, request routing, and schema validation. → Useful for backward compatibility, multi-version support, and integration. Follow Aaron Sim for more insights | 21 comments on LinkedIn