Greenfield Local Hub is a three-tier AWS retail platform combining WAF, CloudFront CDN, and Application Load Balancer to serve customers, producers, and administrators through unified web, mobile, and dashboard interfaces. Traffic flows from external users through the Public Subnet's WAF and CDN, then to the Application Load Balancer, which routes to Web/Mobile Interface, Producer Dashboard, and Admin Dashboard in the Private Subnet. All dashboards and interfaces connect to a Backend API Gateway that orchestrates Authentication, Product Catalogue, Order Management, and Loyalty Rewards microservices, each persisting to a shared RDS database in the Data Subnet. This architecture demonstrates secure multi-role access control, separation of concerns via microservices, and PCI-DSS compliance patterns for payment processing through an external gateway. Fork this diagram on Diagrams.so to customize subnets, add auto-scaling groups, or integrate additional AWS services like Lambda or DynamoDB. Consider adding VPC Flow Logs and CloudWatch alarms for production observability.