About This Architecture

Multi-AZ three-tier web application on AWS with CloudFront CDN, WAF, and Application Load Balancer distributing traffic across EC2 and ECS compute in two availability zones. Application tier connects to RDS Primary/Standby, DynamoDB with cross-region replicas, and ElastiCache Redis for caching, all monitored by CloudWatch. This architecture demonstrates AWS best practices for fault tolerance, auto-scaling, and disaster recovery across isolated subnets and availability zones. Fork this diagram on Diagrams.so to customize instance types, add Auto Scaling Groups, or integrate additional AWS services like SNS or SQS. The design isolates public, application, and data subnets per AZ to enforce least-privilege network access and contain blast radius.

People also ask

How do I design a highly available three-tier web application on AWS across multiple availability zones?

This diagram shows a production-grade AWS architecture with CloudFront CDN and WAF protecting an Application Load Balancer that distributes traffic to EC2 and ECS instances across two AZs. The data tier uses RDS Multi-AZ with primary-standby replication, DynamoDB with cross-region replicas, and ElastiCache Redis replicas for caching, all monitored by CloudWatch for fault detection and auto-recover