Amazon S3 Glacier Instant Retrieval is a new archive storage class that delivers the lowest cost storage for long-lived data that is rarely accessed and requires milliseconds retrieval. With S3 Glacier Instant Retrieval, you can save up to 68% on storage costs compared to using the S3 Standard-Infrequent Access (S3 Standard-IA) storage class, when your data is accessed once per quarter. S3 Glacier Instant Retrieval delivers the fastest access to archive storage, with the same throughput and milliseconds access as the S3 Standard and S3 Standard-IA storage classes. In addition, the existing S3 Glacier storage class is renamed to be S3 Glacier Flexible Retrieval, and now includes free bulk retrievals and a 10% storage price reduction, making it optimized for backup and disaster recovery use cases. Also, Amazon S3 has announced reduced storage prices up to 31% in two storage classes in 9 AWS Regions, effective December 1, 2021.
Source:: Amazon AWS