Abstract: Embodiments of the present invention provide identity management security domains that may be used in an enterprise security system. A security domain provides a centralized registry of services provided by the enterprise security system. For example, certificate authorities and other services, such as key archives, and the like, in the enterprise security system may register information about themselves in the security domain. Authorized users can then discover the location of these services. In some embodiments, the security domain may provide an interface that indicates a topology between services of the enterprise security system. The security domain may also serve as a distribution point for security policies. A security policy may comprise information that indicates, for example, a set of trusted certificate authorities, certificate templates, certificate revocation lists, and the locations of the services in the enterprise security system.