What recommendation should a technical Architect make to support real-time access to order status from multiple ERP systems during acquisitions?

The most effective approach to support real-time access to order status from multiple ERP systems during acquisitions is to leverage an ESB (Enterprise Service Bus) to abstract the Salesforce integration. This enables seamless communication between Salesforce and various ERP systems, allowing for real-time data exchanges.

Using an ESB simplifies integration complexities by centralizing the integration logic and managing communication protocols, ensuring that Salesforce can retrieve data from multiple ERP systems efficiently. This architecture supports real-time processing, meaning that any changes in order status can be reflected promptly without the delays associated with batch processing.

Custom links for redirection do not facilitate real-time data access from backend systems; they primarily provide navigation rather than live data querying. Nightly ETL batches can lead to stale data, as they only provide updates at specific intervals, which would not meet the requirement for real-time access. Direct Apex callouts could work, but they lack the built-in orchestration, error handling, and scalability that an ESB provides when dealing with multiple systems. Hence, using an ESB is the best recommendation for ensuring real-time access to critical order status data.