Amazon EFS Archive is a new storage class that is cost-optimized for long-lived file data that is accessed a few times a year or less. With EFS Archive, you now have a cost-effective way to retain even your coldest data so that it’s always available to power new business insights. In addition, as part of this launch, the storage price for the existing Amazon EFS Infrequent Access (IA) storage class is being reduced by 36% to make EFS an even better solution for sharing a wide range of data.
Source:: Amazon AWS