GourmetExpress e-commerce platform orchestrates interactions between customers, administrators, logistics partners, and payment systems through a unified use case model. Customers search products, manage carts and addresses, confirm orders, and track shipments, while administrators govern inventory, categories, and promotions. The payment system processes transactions, logistics updates order status, and both actors handle returns and cancellations through shared state management. This architecture demonstrates role-based access control and separation of concerns across customer-facing, administrative, and operational workflows. Fork this diagram on Diagrams.so to customize actor roles, add new use cases like wishlists or subscriptions, or export as .drawio for integration into your product specification documents.