When configuring Crowd to use Active Directory as its main directory, you will have to set a user filter so as to fetch only the users that you want to be seen by Crowd. So you might have thousands of users in AD but you can decide to get only 100 of them in Crowd and thus rely on a 100 users only license.
Please take a look at the following page for more details: https://confluence.atlassian.com/display/CROWD/Restricting+LDAP+Scope+for+User+and+Group+Search
For JSM June Challenge #2, share how your non-technical teams like HR, legal, marketing, finance, and beyond started using Jira Service Management! Tell us: Did they ask to start using it or...
Connect with like-minded Atlassian users at free events near you!Find an event
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no Community Events near you at the moment.Host an event
You're one step closer to meeting fellow Atlassian users at your local event. Learn more about Community Events