Three-tier AWS architecture spanning two availability zones with CDN, WAF, and Application Load Balancer protecting the presentation layer. ECS and EC2 instances in private subnets route requests through Lambda functions for business logic, while RDS Primary/Standby and DynamoDB with global replication handle data persistence. This design demonstrates AWS best practices for fault tolerance, security, and scalability across compute, networking, and database services. Fork and customize this diagram on Diagrams.so to match your VPC CIDR blocks, instance types, and regional requirements. Consider adding Auto Scaling Groups to the ECS and EC2 tiers for dynamic capacity management.