title: Amazon S3 lifecycle retroactive application
body: <p>Fairly straightforward question.  Do Amazon S3 lifecycle rules that I set get applied to data retroactively?  If so, what sort of delay might I see before older data begins to be archived or deleted?</p>
  
  <p>By way of example, let's say I have a bucket with 3 years of backed up data.  If I create a new lifecycle where that data will be archived after 31 days, and deleted after 365 days, will that new rule be applied to the existing data?  How soon will it begin to be enforced?</p>