A company needs to retain infrequently accessed data for archive and long-term backup purposes. Which AWS storage option is the most cost-effective for this use case?

Amazon S3 Glacier Flexible Retrieval is the most cost-effective option for infrequently accessed data requiring long-term archival and backup. It is designed for data that can tolerate retrieval times ranging from minutes to hours, offering significantly lower storage costs compared to other services. Amazon FSx for Lustre is a high-performance file system for compute workloads, not cost-effective for archival. Amazon EBS provides block storage for EC2 instances, optimized for frequent access and higher performance, making it more expensive for archival. Amazon EFS is a scalable file system for EC2 instances, also designed for active file storage and not the most cost-effective for long-term, infrequent access.