What could be a use case when to use Standard Infrequent Access vs when to use S3 Glacier ?
S3 IA is best suited to data that has infrequent access patterns but must be retrieved immediately. Storing images for an estate agent is a common exam scenario.
S3 Glacier is a low-cost data archiving solution. It is best suited for data that needs to be archived. Standard retrieval can be 3-5 hours, although you can pay for expedited retrieval which can take 1-5 minutes.
Does that help?
when a company policy restricts the storage of data to just one availability zone, S3-IA is the only option