S3 Storage Classes (Storage Tier) – cost, durability, and availability – can be changed manually or using lifecycle policies.
Link: https://aws.amazon.com/s3/storage-classes/
- Object Durability: The percentage over a one-year period that an object in S3 will not be lost.
- Object Availability: The percentage over a one-year period that an object in S3 will be accessible.
Scriptorium 