title: apply s3 lifecycle policy on existing objects
body: <p>I am applying s3 lifecycle policy on existing bucket. I applied tags to specific objects which I want to apply lifecycle. But I am having an issue here as the objects are already created with different creation date. I am not able to decide how to apply transition and expiration date.
  Some objects are old as 3 years while some are old as 1 year.</p>
  
  <p>Any help would be appreciated.</p>