Northern Trail Outfitters (NTO) uses Salesforce to track leads, opportunities, and order details that convert leads to customers. However, orders are…

The key requirements are real-time access ("view and update real-time") and that the data must not be stored in Salesforce ("only persist in the external system"). This scenario perfectly describes the Data Virtualization integration pattern. This pattern allows a system (Salesforce) to query and display data from a remote system on-demand without copying or synchronizing it. The data remains in the external system of record, ensuring it is always current, while users can interact with it seamlessly within the Salesforce UI. Salesforce Connect is the primary feature that implements this pattern.

A. Data Synchronization involves copying and storing data in Salesforce, which directly violates the requirement that data only persist in the external system.

C. Process Orchestration is a pattern for coordinating multi-step, multi-system processes. While it might use data virtualization, it is not the specific pattern that describes the data access method required here.

1. Salesforce Architects, Integration Patterns and Practices, "Data Virtualization" pattern. The guide defines this pattern as providing "real-time access to the latest data from an external system... without having to persist that data in Salesforce." This directly matches the question's requirements.

2. Salesforce Help, Salesforce Connect. The documentation states, "Salesforce Connect lets your users view, search, and modify data that’s stored outside your Salesforce org... Instead of copying the data into your org, you can use external objects to access the data in real time via web service callouts."

3. Salesforce Trailhead, Salesforce Connect, "Get Started with Salesforce Connect" module. This module explains that Salesforce Connect is used when you have a large amount of data you don’t want to copy into your Salesforce org and you need real-time access.