You must retain acquired healthcare records securely for up to four years and delete them when allowed. Which approach follows policy?

Storing data in Cloud Storage with lifecycle management rules is the most efficient and compliant solution. Lifecycle management automates the deletion of objects after a specified period, ensuring data is retained for the required four years and then automatically removed, meeting both retention and deletion policies. Google Drive is not designed for large-scale, automated data lifecycle management and manual deletion is prone to errors and non-compliance. Anonymizing data with Cloud DLP might address privacy concerns, but it doesn't fulfill the requirement to delete the original records after four years. A nightly batch job could work, but it's less efficient and more complex to manage than Cloud Storage's native lifecycle rules, which are built-in and fully managed.