C4 Component View for an Order Service

This C4 component diagram looks inside an order-service container. Requests enter through an API gateway and pass through an order controller and validator before reaching the order service. The service persists through a repository and collaborates with inventory, payment, event and audit components. That division helps teams discuss ownership, test boundaries and failure handling without dropping down to class diagrams. In a real system, some of the named collaborators may be internal components while others are external services; adjust the boundary labels accordingly. Keep this view focused on significant responsibilities. For endpoint signatures or method calls, move to code documentation rather than adding every helper class here.