Composing a Customer Data Platform on top of a data warehouse provides strong controls over data exposure, allowing companies to keep their data within their perimeter and control access. Cloud data warehouses offer robust security controls, including username and password-based permissions, audit logs, and authentication mechanisms. The Composable CDP approach enables companies to leverage these controls, combining them with Census' data access controls to limit who can see or use the data. Census also provides PII masking capabilities to protect sensitive data, allowing users to activate data without exposing personal identifiable information. By using these tools, companies can make strong commitments about how and who is using their data while maintaining agility in its usage.