use security groups of AAD or AD
I think It would be a good idea the possibility of use security groups as well as using office 365 groups to assign people to a new team.
Nicola Guarino commented
I discovered that a standard user owner of Team can add an Azure Security Group to the members of his Team.
A Teams administrator can only add users one by one, and cannot browse and add Azure AD security groups to any Team
We are locking down the ability to create Teams and we are looking at Dynamic Azure AD security Group to automate membership management and to facilitate users and IT admins life
Unfortunately we are still obliged to go through manual updates.
Hope there are further vote on this.
Markus Johansson commented
We've tried adding security groups from our AD to teams, and what happens is that all the users CURRENTLY in that AD group get added.
We'd really love to have the option of adding the AD group itself like we do on SharePoint so that any users that get added to the group in the future automatically get included in the Team.
Our goal is to start using Teams rather than Outlook for mass communication, but this is holding us back as we can't be 100% sure that all the users will be members of the team.