Amazon S3 Glacier is designed for long-term backup and archival storage with infrequent access patterns. It provides cost-efficient storage pricing and is most closely aligned with the requirement for storing backups and archival data that are infrequently accessed. Amazon EBS volumes are suited for block-level storage and are not optimized for infrequent access or archival purposes. Amazon EFS provides file storage solutions that can scale automatically, but it is more expensive than Amazon S3 Glacier for archival use cases. Amazon S3 Standard offers high durability, availability, and performance object storage for frequently accessed data, making it less cost-effective for archival storage when compared to Glacier.