In the previous recipe, Integrating with LDAP for authentication only, we looked at how to integrate Jira with an LDAP server for user and group information. Besides using LDAP, another popular option is to use Crowd, which is available at https://www.atlassian.com/software/crowd/overview.
Crowd is a user-identity-management solution from Atlassian, and Jira supports Crowd integration out of the box. With Crowd, you can also set up a single sign-on option with other Crowd-enabled applications.