Seamlessly join an Amazon EC2 for Linux instance to AWS Directory Service
You can now join your Amazon EC2 for Linux instances to a domain configured with AWS Directory Service seamlessly. The new capability automates the previously manual approach for integrating Linux-based EC2 instances to your AWS Directory Service for Microsoft Active Directory (AWS Managed Microsoft AD), or to an existing on-premises Active Directory (AD) using AD Connector. This makes it easier for you to launch and manage your Amazon EC2 for Linux instances, reducing deployment time and administration effort.
Source:: Amazon AWS