Identify what the policy retains
Determine whether the configured period applies to the current version only, every version, or objects with a specific tag or prefix. A lifecycle rule may transition or expire versions differently from the visible current object.
With versioning enabled, deleting an object may create a delete marker while earlier versions remain stored and billable. A retention policy can also prevent deletion until its deadline, even if the object no longer appears in ordinary listings.
Test lifecycle behavior before broad rollout
Use a small test prefix with representative versions and verify transitions, expiration, and delete-marker behavior using the provider's documented controls. Check whether legal holds or retention locks override lifecycle actions.
Estimate storage and retrieval effects across all retained versions, and document the intended recovery window. Do not promise permanent preservation from versioning alone; pair it with explicit retention, access controls, and tested restore procedures.