S3 Lifecycle policies allow you to define rules that automatically transition or expire objects based on their age or other criteria. By configuring an S3 Lifecycle policy to delete expired object versions and retain only the two most recent versions, you can effectively manage the storage costs while maintaining the desired retention policy. This solution is highly automated and requires minimal operational overhead as the lifecycle management is handled by S3 itself.

B: Too much work with Lambda C: Possible but requires lot of work D: Oxymoron statement... i.e. how do you remove version and retain version at same time without additional overhead? Custom solution may be more work. A: S3 Lifecycle is designed to retain object and version with set criteria

Use S3 Lifecycle to delete expired object versions and retain the two most recent versions.

S3 Lifecycle to the rescue...whoooosh

A --> "you can also provide a maximum number of noncurrent versions to retain." https://docs.aws.amazon.com/AmazonS3/latest/userguide/intro-lifecycle-rules.html

A is correct.

Agree with LONGMEN