Multi-AZ Kubernetes application architecture on AWS with CloudFront CDN, WAF, and Application Load Balancer protecting React/Next.js and Node.js/Express microservices across two availability zones. Traffic flows from web and mobile clients through WAF and CloudFront to ALBs in public subnets, routing to frontend and backend Kubernetes services in private subnets within separate namespaces. RDS PostgreSQL primary-standby replication and ElastiCache Redis primary-replica caching in dedicated data subnets ensure database resilience and performance across AZ-1 and AZ-2. This architecture demonstrates AWS best practices for fault tolerance, auto-scaling, and separation of concerns using Kubernetes namespaces and VPC subnet isolation. Fork this diagram on Diagrams.so to customize instance types, add auto-scaling policies, or integrate additional AWS services like Secrets Manager or CloudWatch monitoring. Consider adding NAT Gateways in public subnets for secure outbound traffic from private application subnets.