AWS Directory Service is that key for controlling, securing, and integrating identity across your cloud infrastructure. It bridges user authentication, access control, and application permissions into a single, manageable service. When you run workloads on AWS, it becomes the foundation for managing who can do what, and where they can do it.
AWS Directory Service supports multiple directory types: AWS Managed Microsoft AD, AD Connector, and Simple AD. Each plays a role in how you connect workloads, link with on-premises Active Directory, or create a standalone cloud directory. Setup is direct, but the impact is deep—especially when compliance, governance, and security are not optional.
With AWS Managed Microsoft AD, you get a fully managed Active Directory built on Windows Server in the AWS Cloud. It integrates seamlessly with existing AD-aware workloads and services like Amazon RDS for SQL Server, Amazon WorkSpaces, and Amazon Connect. It removes the operational burden of patching, replication, high availability, and domain controller maintenance.
AD Connector is for when your organization already has an on-prem directory and you want AWS services to authenticate directly against it. This avoids synchronizing identities, reducing duplication and complexity. Simple AD is a cost-effective option for small to medium workloads that need basic Active Directory features without enterprise-scale complexity.