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Three of the following reduce cloud storage cost. Which is the odd one out?

  • A.enabling cross region replication
  • B.lifecycle transitions to colder classes
  • C.deleting incomplete multipart uploads
  • D.compressing data before upload

Answer: A

Correct answer: enabling cross region replication

Cross region replication stores a second copy and pays egress to put it there, so it increases cost - deliberately, in exchange for regional resilience. The other three all reduce it: lifecycle transitions move cold data to cheaper classes, deleting incomplete multipart uploads removes fragments that are billed and invisible, and compression reduces the bytes stored.

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