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HA Multi-AZ Web Platform — AWS Architecture Template
Highly available web tier spread across availability zones with Aurora, shared EFS storage, and NAT egress.
Why this architecture works
- Instances in at least two AZs behind the ALB survive a full zone outage without manual failover
- Aurora replicates storage six ways across three AZs, giving sub-minute failover for the data tier
- EFS provides shared state (uploads, sessions) so any instance can serve any request
- NAT Gateway gives private instances outbound patching access without inbound exposure
- Session state kept in ElastiCache, not on instances, so scale-in events never log users out
What's inside (10 resources)
DNS Failover
aws-route53
Multi-AZ VPC
aws-vpc
Load Balancer
aws-alb
NAT Gateway
aws-nat-gateway
Web AZ-a
aws-ec2
Web AZ-b
aws-ec2
Aurora Multi-AZ
aws-aurora
Session Cache
aws-elasticache
Shared Files
aws-efs
Health Alarms
aws-cloudwatch
From template to running infrastructure
- Open this template in the CloudForge visual designer (free account, no credit card).
- Customize resources, names, and connections on the drag-and-drop canvas — or ask Vani, the AI architect, to adapt it.
- Generate production-ready Terraform or CloudFormation in one click.
- Review the plan diff and security scan, then deploy with human approval.