Greenfield Local Hub is a production-ready digital retail platform built on AWS with a four-layer network architecture spanning presentation, application, data, and management VLANs. Customer, producer, and administrator traffic flows through Route 53 DNS, AWS WAF, and CloudFront CDN before reaching an ALB that distributes requests to a React/Next.js frontend and API Gateway-backed microservices including Auth, Product Management, Orders, and Loyalty Rewards running on ECS Fargate. The architecture demonstrates enterprise-grade security with Cognito authentication, KMS encryption, and Shield DDoS protection, while asynchronous order processing via SQS, EventBridge, and Step Functions ensures scalability and decoupling. Data persistence spans RDS Aurora with read replicas for transactional data, DynamoDB for loyalty points, ElastiCache Redis for session caching, and external Stripe integration for payments through a NAT Gateway. Fork this diagram on Diagrams.so to customize VPC CIDR ranges, instance types, or add additional microservices for your retail use case.