An organization wants to implement B2C Commerce, Marketing Cloud, and Service Cloud in a phased...

C. This implementation strategy allows the company to replace their legacy commerce system first, which is their highest priority, and then integrate it with Service Cloud to provide better customer service. By using the Service Cloud Contact ID as the Marketing Cloud Contact Key, the company can ensure a consistent and unified view of the customer across the Salesforce products when Marketing Cloud is implemented later. D. This implementation strategy allows the company to achieve a unified customer experience across all three clouds from the start, but it also requires more resources and coordination to implement all three clouds at the same time. The primary identifiers for all three clouds must be synced to ensure data consistency and avoid duplication. References: https://trailhead.salesforce.com/content/learn/modules/marketing-cloud-contact-management/understand-contacts-and-contact-model-relationships