Salesforce Exam Integration-Architecture-Designer Topic 1 Question 30 Discussion

Northern Trail Outfitters (NTO) use Salesforce to track leads, opportunities, and to capture order details. However, Salesforce isn't the system that holds or processes orders. After the order details are captured in Salesforce, an order must be created in the remote system, which manages the orders lifecylce. The Integration Architect for the project is recommending a remote system that will subscribe to the platform event defined in Salesforce.

Which integration pattern should be used for this business use case?