A data engineering team is migrating a large-scale enterprise system with thousands of tables into a Lakehouse architecture. The implementation follows the Medallion architecture with the following requirements:

• Bronze Tables: Raw data used primarily for production engineering tasks.
• Silver Tables: Cleaned data for engineering and ML, featuring pseudonymized PII.
• Gold Tables: Aggregated data for BI and reporting, featuring fully anonymized PII.

To minimize security risks while maximizing cross-team collaboration, which organizational strategy represents the best practice?