Forum Discussion
Turn off ability to create teams
We also have had a A1 plan with Azure Basic which should be included. It is difficult to setup the process but it should be supported to disable this feature.
Disable Teams: http://macslui.blogspot.com/2017/11/disable-self-service-teams-creation.html
Manage 365 Groups: https://support.office.com/en-us/article/Manage-who-can-create-Office-365-Groups-4c46c8cb-17d0-44b5-9776-005fced8e618
In addition persons can create Distribution List if that feature is available to users if you have not secure it.
http://msweany.blogspot.com/2014/06/office365-remove-users-create-dist-list.html
From what I understand you can easily create the group creation restriction policy without being assigned the appropriate Azure AD Premium licences, but that doesn't necessarily mean it's not a requirement to be compliant?
"Doing the steps in this article requires a subscription to Azure Active Directory (Azure AD) Premium. The administrator who configures the settings, and the members of the affected groups, must have Azure AD Premium licenses assigned to them"
https://support.office.com/en-us/article/manage-who-can-create-office-365-groups-4c46c8cb-17d0-44b5-9776-005fced8e618