A. Tier levels must be calculated and attributed to customers in Marketing Cloud and then propagated to Service Cloud so that they can be used to inform how cases are routed to teams. Marketing Cloud must integrate with B2C Commerce to leverage purchase data necessary for these calculations.

B. Tier levels must be calculated regularly and attributed to Contact records in Service Cloud so that the tier level can be leveraged by Service Cloud's omni-channel routing feature and synchronized back to B2C Commerce and Marketing Cloud.

C. Service Cloud can be extended with customer flows and Lightning Web Components to create a separate support process specifically designed for customers that are attributed a tier level.

D. Case routing can be configured by configuring Service Cloud's omni-channel routine feature to route cases to support teams based on the tier level of the customer submitting the case and the availability of agents supporting each tier level.