About This Architecture

AWS Multi-AZ three-tier architecture spans two availability zones with CloudFront CDN, WAF, and Route 53 protecting user traffic at the edge. Application Load Balancers route requests to EC2 t3.medium, ECS Fargate, and Lambda compute across private subnets, while RDS Primary/Standby and DynamoDB Global Tables ensure data resilience and low-latency reads. This design demonstrates AWS best practices for fault tolerance, auto-scaling, and operational visibility through CloudWatch and CloudTrail. Fork and customize this diagram on Diagrams.so to match your VPC CIDR blocks, instance types, and monitoring requirements. The multi-AZ deployment with cross-region DynamoDB replication provides RPO/RTO targets suitable for mission-critical workloads.

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How do I design a highly available three-tier AWS application across multiple availability zones with automatic failover?

This diagram shows a production AWS architecture spanning AZ-1 and AZ-2 with CloudFront CDN and WAF protecting traffic, ALBs distributing requests to EC2/ECS/Lambda compute, and RDS Primary/Standby plus DynamoDB Global Tables ensuring data resilience. Route 53 health checks enable DNS failover, while CloudWatch and CloudTrail provide observability and compliance auditing.