Join an EC2 instance to your Active Directory
AD Connector is a directory gateway with which you can redirect directory requests to your on-premises Microsoft Active Directory without caching any information in the cloud. Here's more information on how you can join an Amazon EC2 to an Active Directory domain:
You can seamlessly join an EC2 instance to your Active Directory domain when the instance is launched. For more information, see Seamlessly joining a Windows instance to an Amazon Managed Microsoft AD domain.
If you need to manually join an EC2 instance to your Active Directory domain, you must launch the instance in the proper Amazon Web Services Region and security group or subnet, then join the instance to the Active Directory domain.
To be able to connect remotely to these instances, you must have IP connectivity to the instances from the network you are connecting from. In most cases, this requires that an internet gateway be attached to your Amazon VPC and that the instance has a public IP address. For more information about connecting to the internet using an internet gateway see Connect to the internet using an internet gateway in the Amazon VPC User Guide.
Note
Once you join an instance to your self-managed Active Directory (on-premises), the instance communicates directly with your Active Directory and bypasses AD Connector.