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1. Using the distributor's web interface, a department store buyer submits an order for multiple products. An HTTP request is sent to the "OrderReceiver, an HTTP binding component (BC). ^{4 3}
2. The OrderReceiver sends the message to an "OrderRouter" Service Engine (SE) ^{5 4} component. This SE is responsible for parsing the order and deciding, based on the message content, which OrderTransformer should receive which part of the message (i.e., an order for a product).
3. The OrderRouter publishes the orders to the appropriate message topics based on the message content. Specifically, the OrderRouter publishes the messages based on which wholesaler sells the item.
4. The OrderTransformer is a Service Engine component, which modifies the message and puts it in a format which is readable by the wholesaler interface that will fulfill the order.
5. Each OrderTransformer sends the modified message to the OrderProcessor.
6. The OrderProcessor is a Binding Component that has two functions: a. The OrderProcessor places an order to the appropriate wholesaler through the wholesaler's Webservice or proprietary interface. b. It also publishes a message about the order on a topic.
7. The OrderProcessor also publishes a message about the order on a topic.
8. The message on the topic is subsequently picked up by the BusinessMonitor component. This component monitors the orders for quality assurance and business analytics, such as data mining.

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1. External means the application is outside of the enterprise service bus.
2. Resource Adapter: a resource adapter provides connectivity between a specific external application and the ESB. In the Basic example, the resource adapter is an ActiveMQ adapter supplied by the jencks JCA ContaineIn the _Basic example the jencks container provides a JMS resource adapater.
3. Binding Component (BC): a BC provides connectivity to applications that are external to the ESB.
4. Service Engine (SE): a service engine provides business logic and transformation services to other components within the enterprise service bus.