Modern api gateway architecture diagram, futuristic, digital illustration, 3D design, metallic material, sleek lines, minimalist aesthetic, white background, subtle gradient effects, simple icons, microservices, load balancers, security firewalls, cloud infrastructure, AWS or Azure environment, high-availability setup, scalable system, real-time data processing, asynchronous communication, fault-tolerant architecture, circuit breaker pattern, service discovery mechanism, API key management, rate limiting, quota management, access control, authentication mechanisms, authorization flows, SSL/TLS encryption, HTTP/2 protocol, JSON data format, RESTful APIs, GraphQL API, gRPC protocol, Kubernetes deployment, Docker containerization, Helm chart management, Prometheus monitoring, Grafana visualization, real-time analytics.