E-Commerce System Sequence Diagram
About This Architecture
E-commerce order fulfillment sequence spanning four phases: customer browsing and checkout, payment processing, inventory management, and order tracking. Customer, Admin, Store Staff, Payment System, Order Service, and Inventory Service actors interact across phases to complete the transaction lifecycle. This diagram demonstrates asynchronous handoffs and service boundaries critical for scalable, maintainable e-commerce platforms. Fork this template on Diagrams.so to customize for your payment gateway, inventory backend, or notification service. Use it in architecture reviews to align engineering teams on order state transitions and failure points.
People also ask
How do e-commerce systems coordinate between customers, payment processors, inventory, and order services?
This sequence diagram shows four phases: Phase 1 has customers browse and place orders via Order Service and Inventory Service; Phase 2 routes payment through Payment System; Phase 3 lets Admin and Store Staff manage inventory; Phase 4 tracks orders and notifies customers. It clarifies actor responsibilities and service dependencies.
- Domain:
- Software Architecture
- Audience:
- backend engineers designing e-commerce order fulfillment systems
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