What is a primary benefit of storing tenant data in separate databases?

Storing tenant data in separate databases primarily ensures data destruction upon tenant deletion. This practice provides a clear and efficient way to manage data retention and deletion policies. When a tenant's contract ends or when the tenant no longer requires access, their specific database can be completely and accurately deleted without affecting any other tenants' data.

This approach minimizes the risk of accidental data exposure or retention beyond the necessary period since each tenant's data is isolated. It also allows organizations to comply with data protection regulations more easily, enhancing security and privacy by making it straightforward to remove all traces of a tenant's information from the system.

The other options reflect negative outcomes or less efficient strategies that are counterproductive to the primary benefit of data isolation. For example, improved database complexity is not desirable, as simplicity is often key to management and maintenance. Increased costs for database management also contradict the streamlined and efficient handling typically associated with separate databases. Finally, while uniform backup policies might sound beneficial, they do not leverage the advantages of individualized tenant data management that separate databases afford.