title: How to change storage class of object in s3 bucket using boto3?
body: <p>I am trying to change the storage class of an object in S3 from standard to IA
  This is similar to <a href="https://stackoverflow.com/questions/36132248/how-to-change-storage-class-of-object-in-s3-bucket">this</a> thread. But I would like to do it using boto3 and lambda trigger.</p>
  <p>thanks</p>