Data retention policies are unnecessary in a Lakehouse architecture because Delta Lake automatically handles all aspects of data lifecycle management without any configuration.

Data retention policies in a Lakehouse architecture are solely focused on minimizing storage costs by deleting old data, without considering compliance or accessibility requirements.

Data retention policies in a Lakehouse architecture involve setting up rules for data storage, access, and deletion based on specific criteria such as data age or legal requirements, and can be implemented using Delta Lake's features like table properties and time travel.

Data retention policies in a Lakehouse architecture are only relevant for data that is no longer in active use, and their implementation does not require any specific features from Delta Lake.