Learn more about AWS Directory Service at – http://amzn.to/2vcEdgh.
This will explain how you can create a trust relationship between AWS managed Active Directory (AD) and another AD such as on-premises AD. It will allow you to federate identities and integrate AWS services such as WorkSpaces and RDS with on-premises AD.
More info can be found in the following links:
Publisher: Amazon Web Services
You can watch this video also at the source.