The text discusses the challenges of aligning data governance with complex data management policies, highlighting how Couchbase Mobile can facilitate the implementation of data retention policies within enterprises. Data governance, as defined by NIST, involves managing data assets formally across an enterprise and includes aspects like data privacy, security, integrity, and consistency. With distributed data storage becoming more complex, Couchbase Mobile 3 aids in enforcing data retention policies by ensuring that unauthorized users cannot access specific documents after access is revoked. The Sync Gateway access control model plays a central role in this process by managing document access through channels and automatically purging documents from devices when access is revoked. This capability is exemplified in use cases like enterprise sales teams, cruise lines, and retail stores, where document access needs to be dynamically managed. Couchbase Mobile offers features like automatic document purging, fine-grained access control, and data encryption, supporting the broader objectives of data governance.