A large enterprise customer is implementing Salesforce.

To achieve a "Customer 360" view where sales and service associates have the context needed for daily interactions, Salesforce is the logical System of Record (SoR) for customer and prospect engagement.

While the ERP remains the master for financial transactions (invoices) and the Marketing tool masters campaign analytics, Salesforce should house the core "Golden Record" of the customer. This is achieved by integrating relevant data from the ERP (order status, invoice history) and Marketing (lead source, email engagement) into Salesforce. This strategy (Option A) empowers associates to log interactions and view history in one place, fulfilling the primary goal of the CRM implementation while avoiding the complexity of a new custom database (Option B) or trying to force prospect-level engagement data into a rigid ERP (Option C).