Explanation: AWS Storage Gateway connects an on-premises software appliance with cloud-based storage toprovide seamless integration with data security features between your on-premises IT environmentand the Amazon Web Services (AWS) storage infrastructure. You can use the service to store data in the AWS cloud for scalable and cost-effective storage that helps maintain data security. AWS StorageGateway offers both volume-based and tape-based storage solutions: Volume gateways Gateway-cached volumes Gateway-stored volumes Gateway-virtual tape library (VTL) Reference: http://media.amazonwebservices.com/architecturecenter/AWS_ac_ra_disasterrecovery_07.pdf