File Gateway is a configuration of the AWS Storage Gateway service that gives applications an interface to store files as objects in Amazon S3 and access them. Local applications also benefit from a low-latency local cache of frequently used content. The result is tiered hybrid cloud content storage that can be easily accessed by on-premises applications via NFS or SMB.
The file gateway's SMB and NFS interfaces provide an ideal way for IT groups to simply transition their backup jobs to the cloud. Backup applications, native database tools or scripts that can write to SMB or NFS can write to the file gateway, which will store the backups as Amazon S3 objects.