When a business process does not require immediate confirmation from a target system, the architecture can move from a synchronous Request-Reply pattern to an asynchronous Fire-and-Forget pattern. In this transition, the most critical 'non-functional' requirement for the Integration Architect is to define acceptable latency.

Latency determines the technical stack. If the fulfillment system must receive the order within seconds (Near Real-Time), the architect might choose Salesforce Outbound Messaging or a Flow-triggered Platform Event. If the order only needs to arrive within 4-12 hours, a Batch ETL process is more efficient as it conserves API limits and can handle much higher volumes more reliably.

While address validation (Option B) is a functional requirement, it does not define the architectural framework. Option C is a specific solution implementation question rather than a fundamental design constraint. By asking about latency, the architect identifies the time boundary between 'Data Entry' in Salesforce and 'Processing' in the fulfillment system. This answer directly informs the choice of pattern, the retry logic required, and the error-handling strategy needed to ensure the 'Order-to-Cash' cycle is completed successfully without blocking the sales rep's productivity.