A large enterprise customer has decided to implement Salesforce as their CRM. The current system landscape includes the following:
1. An Enterprise Resource Planning (ERP) solution that is responsible for Customer Invoicing and Order fulfillment.
2. A Marketing solution they use for email campaigns.
The enterprise customer needs their sales and service associates to use Salesforce to view and log their interactions with customers and prospects in Salesforce.
Which system should be the System of record for their customers and prospects?