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Active Directory Application Mode (ADAM) is a Lightweight Directory Access Protocol (LDAP)-compliant directory service used for building directory-enabled applications.
ADAM is intended for users who do not want to set up a domain controller to enable directory services. It runs on Windows Server 2003 and Windows XP Professional.
Following the release of Windows Server 2008m ADAM came to be known as Active Directory Lightweight Directory Services (AD LDS).
ADAM runs as a non-OS service with multiple instances running concurrently on the server. Each instance uses LDAP to communicate with other ADAM instances and can be configured independently. By integrating with Active Directory Federated Services (ADFS), ADAM can be used to achieve single sign-on functionality.
ADAM consists of the following components:
ADAM can be used as an application component or as a stand-alone LDAP directory in scenarios such as:
ADAM is designed to be deployed in organizations so as to support both the network operating system (NOS) and the applications that leverage any security built into the NOS infrastructure. This can be accomplished without any overhead in training, additional licensing or operational costs for installing additional directory technology that would otherwise be necessary for supporting directory-enabled applications. ADAM facilitates cross-directory integration to meet the diverse needs of authentication. Its benefits include easy deployment, reduced infrastructure costs, increased security, flexibility, reliability and scalability.
The key features of ADAM are: