A company has 700 TB of backup data on network attached storage (NAS) in its data center. The backups must remain accessible for infrequent regulatory requests and be retained for 7 years. The company will migrate the data to AWS within 1 month and has 500 Mbps of dedicated public internet bandwidth available. What should a solutions architect do to migrate and store the data at the LOWEST cost?

Ordering AWS Snowball devices is the most cost-effective solution for migrating 700 TB of data with limited bandwidth (500 Mbps) within a month. Transferring this volume over the internet would be slow and potentially expensive. S3 Glacier Deep Archive provides the lowest-cost storage for data that is infrequently accessed and needs to be retained for 7 years. A lifecycle policy automates the transition to this storage class. Deploying a VPN and using AWS CLI to S3 Glacier would be too slow and expensive for 700 TB. Provisioning AWS Direct Connect is costly and unnecessary given the Snowball option, and transferring directly to S3 then Glacier Deep Archive is less efficient than using Snowball for the initial transfer. AWS DataSync to S3 Glacier is not ideal for such a large initial migration over limited bandwidth; DataSync is better for ongoing synchronization or smaller initial transfers.