About This Architecture

Multi-AZ web application architecture spanning two AWS availability zones with Route 53 DNS, dual Application Load Balancers, and Auto Scaling EC2 instances across isolated subnets. Traffic flows from users through Route 53 to Internet Gateway, then to ALBs in each AZ, distributing requests to t3.medium EC2 instances in private application subnets. Application tier connects to RDS MySQL with primary-standby replication across AZs and S3 for file storage, eliminating single points of failure. This architecture demonstrates AWS best practices for fault tolerance, auto-scaling, and separation of concerns using VPC subnets and security groups. Fork and customize this diagram on Diagrams.so to match your CIDR blocks, instance types, or add additional services like CloudFront or ElastiCache.

People also ask

How do I design a highly available AWS web application that survives availability zone failures?

This diagram shows a production-ready multi-AZ architecture where Route 53 routes traffic to Application Load Balancers in each AZ, which distribute requests to Auto Scaling EC2 instances in private subnets. RDS MySQL replicates synchronously between AZs, and S3 provides durable file storage, ensuring your application remains available even if an entire AZ fails.