What integration strategy should be recommended to avoid slowing down call center sales agents while de-duplicating Lead records?

The recommended integration strategy involving the use of an outbound message to a Master Data Management (MDM) system with a callback for marking duplicates is effective because it allows real-time processing without significantly impacting the performance of call center sales agents. By utilizing an outbound message, Salesforce can push Lead information to the MDM system asynchronously, which frees up resources and prevents delays in the user interface for sales agents.

This method allows for a smooth user experience, enabling agents to continue with their tasks while the de-duplication process occurs in the background. The callback mechanism ensures that once duplicates are identified in the MDM system, the information can be relayed back to Salesforce, keeping the Lead records up to date without interrupting ongoing sales activities.

In contrast, synchronizing the MDM system to a custom object in Salesforce may create complexities in data synchronization and could lead to latency while waiting for updates, which could affect call center operations. Likewise, a batch APEX process to de-duplicate records may not be ideal due to its periodic nature; it could result in outdated data being visible to sales agents, as de-duplication would not be real-time. Finally, relying solely on out-of-the-box Lead De-duplication Rules might be limited in functionality and