About This Architecture

Multi-AZ web architecture spanning two AWS availability zones with WAF, CloudFront CDN, and Route 53 for global traffic management and DDoS protection. Traffic flows through an Application Load Balancer to Elastic Beanstalk frontends and API Gateway backends running on Fargate, with data persisted in RDS Multi-AZ (Primary and Standby), S3, and ElastiCache. This design demonstrates AWS best practices for fault tolerance, auto-scaling, and separation of concerns across presentation, application, and data layers. Fork and customize this diagram on Diagrams.so to match your VPC CIDR blocks, instance types, or add additional services like Lambda or SNS. The architecture prioritizes zero-downtime deployments and automatic failover across availability zones.

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How do I design a highly available AWS web application that spans multiple availability zones with automatic failover?

This diagram shows a production-grade multi-AZ architecture using Route 53 for DNS failover, CloudFront for global content delivery, ALB for traffic distribution, Elastic Beanstalk and Fargate for compute, and RDS Multi-AZ for database redundancy. Each AZ contains isolated subnets for public, application, and data layers, ensuring fault isolation and enabling zero-downtime deployments.