I believe that this question could be already answered, but I haven't found nothing 
We are considering buying Jira Service Management for our company.
The whole company is 250+ people. We will have ~30 agents.
We have all our users in Active Directory. We want to sync them with Jira, so they can leave some requests to our agents. It can be done via Atlassian Access if I am not mistaken.
The question is: do we need an Atlassian Access account for ALL users in our company (250+) - to allow them to use Service Management? Or do we just need Atlassian Access for 30 agents?
Thank you.