Lakehouse is a hybrid solution that combines the scalability of a data lake with the transactional power of a data warehouse.Secure data in a lakehouse architecture can be treated by using encryption, hashing, and string masking techniques.Fine-grained access control can be implemented in a lakehouse architecture to limit access to specific data fields, rows, or columns.AWS Lake Formation and GCP BigQuery provide features to manage and enforce data governance and security in a lakehouse architecture.