By backing up data from Amazon EBS to Amazon S3, only the changed portion of the compressed real data volume can be stored, allowing you to build a backup environment with high protection performance at a low cost. By installing a Linux or Windows OS on Amazon EC2 and combining Amazon EBS (OS/data area) and Amazon S3 (backup area), a file server similar to an on-premise environment can be built and operated in a cloud environment, including security policies, privilege management, and authentication. By combining Amazon EBS (OS/data area) and Amazon S3 (backup area), a file server similar to an on-premise environment can be built and operated in a cloud environment, including security policies, privilege management, authentication, etc. File servers may handle sensitive data, but by using Amazon VPC to establish a VPN connection from the internal environment, a secure environment can be built. Since the file service is always connected, you can reduce costs by using Amazon EC2 Reserved Instances.