Module tiering 

S3 storage class tiering for cost optimization S3 storage class tiering for checkpoint data.

Maps checkpoint objects to storage tiers (hot/warm/cold) with appropriate S3 storage classes, object tags for lifecycle rules, and compression strategies (LZ4 for hot, Zstd for warm/cold).

Structs

TieringPolicy

Builds [PutOptions] and selects compression for each storage tier.

Enums

StorageClass

S3-compatible storage class for checkpoint objects.

StorageTier

Logical tier for a checkpoint object.