About This Architecture

Multi-AZ three-tier web application on AWS with Route 53 DNS, CloudFront CDN, WAF, and Application Load Balancer distributing traffic across EC2 Auto Scaling Groups in two availability zones. Application tier runs t3.medium instances in private subnets, connecting to RDS PostgreSQL primary and read replica databases plus ElastiCache clusters for session and query caching. CloudWatch monitors all components while Secrets Manager secures database credentials, ensuring fault tolerance, auto-scaling, and compliance across AZ-1 and AZ-2. Fork this diagram to customize instance types, database tiers, or add additional services like SQS or SNS. This architecture demonstrates AWS best practices for production workloads requiring 99.99% uptime and geographic redundancy.

People also ask

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

This diagram shows a production-grade AWS architecture spanning AZ-1 and AZ-2 with Route 53 DNS, CloudFront CDN, WAF, and an Application Load Balancer routing traffic to Auto Scaling EC2 instances. The data tier uses RDS PostgreSQL primary-replica replication for read scaling, while ElastiCache clusters provide session and query caching across both zones. CloudWatch and Secrets Manager complete th