About This Architecture

Three-tier AWS web app using ECS Fargate, RDS PostgreSQL, and ElastiCache Redis across two availability zones for fault tolerance. CloudFront and WAF protect static assets and traffic at the edge, while an Application Load Balancer distributes requests to containerized Fargate tasks in private subnets. RDS Primary-Standby replication and ElastiCache Redis replicas ensure data durability and read performance, with IAM Task Roles, CloudWatch Logs, and X-Ray Tracing providing security and observability. Fork this diagram to customize VPC CIDR blocks, instance types, or add additional AZs for your production workload.

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How do I design a highly available three-tier web application on AWS using ECS Fargate and RDS with multi-AZ failover?

This diagram shows a production-ready three-tier AWS architecture where ECS Fargate tasks in private subnets handle application logic, RDS PostgreSQL Primary-Standby replication ensures database durability across AZs, and ElastiCache Redis replicas provide fast caching. CloudFront and WAF protect static assets and incoming traffic, while IAM Task Roles, CloudWatch Logs, and X-Ray Tracing deliver s