Currently, groups are managed within Atlassian Cloud and there's no way to map your group from your AD group.
AD Groups, such as Developers and Admins to be mapped over to Atlassian Groups. For example, people in the "Administrators" AD Group will automatically be added to the "administrators" Atlassian group.
Why this is important
Ideally, we would want the admin to manage user in only one platform/application.