No more expensive maintenance and operating charges associated with on-premises infrastructure

Summary

Up to this point, we have loaned private data centers and performed all of our various services with on-premises servers. One possible point of improvement is the cost of such operations.
Moreover, there are a number of server groups without backups, and we urgently need a counter-measure.
Accordingly, we have established a Virtual Private Cloud environment in AWS, giving us a back-up of our on-premises system.
After that, we switched the Active Directory and NAS environments over to AWS, as well as our on-premises web services.

AWS Environment EC2, S3, VPC, SES, CloudWatch, SNS
Point coordinate with the cloud while still utilizing our on-premises assets
Our Role Direction, server design/architecture, management program, operational maintenance
Development Period 4 months