Connections to Windows Remote Desktop Session Hosts (RD Hosts) require dynamically assigned Remote Desktop Services client access licenses (RDS CALS) from RD Licensing. To use RD Licensing you must authorize one or more RD Licensing servers in the same Active Directory domain as your Remote Desktop Session Hosts (RDS hosts). The new AWS Microsoft AD release enables you to authorize your RD Licensing servers by adding them to the Terminal Service Licensing Servers security group. As a result, you can now deploy RD Hosts and RD Licensing in the AWS Cloud without the need to set up and configure your own Active Directory on EC2 Windows.