https://amazonaws-china.com/cn/premiumsupport/knowledge-center/ec2-systems-manager-dx-domain/
https://amazonaws-china.com/cn/blogs/security/how-to-connect-your-on-premises-active-directory-to-aws-using-ad-connector/
https://docs.aws.amazon.com/zh_cn/directoryservice/latest/admin-guide/what_is.html
https://aws.amazon.com/premiumsupport/knowledge-center/ec2-systems-manager-dx-domain/
other
https://theether.net/kb/100218