Available in Nexus Repository Manager only
Atlassian Crowd is a single sign-on and identity management product that many organizations use to consolidate user accounts and control which users and groups have access to which applications. Nexus Repository Manager contains a security realm that allows you to configure the repository manager to authenticate against an Atlassian Crowd instance.
The following steps are necessary to configure Crowd-based authentication:
Atlassian Crowd support is a Nexus Repository Manager feature.