The document describes Amazon Web Services storage portfolio including Storage Gateway, which is a hybrid storage solution that allows on-premises applications to access objects in Amazon S3 or files in Amazon EFS. It provides three options: file gateway, volume gateway and tape gateway. File gateway stores file data as objects in S3, volume gateway stores volume data in S3 and allows for EBS snapshots, and tape gateway provides virtual tape storage in S3 and Glacier with tape library emulation. The document also provides use cases and examples of migrating and recovering data using Storage Gateway.