AWS Storage Gateway is a service that connects an on-premises software appliance with cloud-based storage to provide seamless and secure integration between your on-premises IT environment and AWS's storage infrastructure.

User Guide
Describes AWS Storage Gateway concepts and provides instructions on using the various veatures with both the console and the API.
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API Reference
Describes the AWS Storage Gateway API and CLI operations. Also provides sample requests, responses, and errors for the supported web services protocols.