Teams offers a number of ways to create new teams, which is good. However, if you create a new team with PowerShell, make sure that you add the team owners to the members list as otherwise they won’t be able to access Planner.
The latest version of the Teams desktop and browser clients support the creation of dynamic teams based on dynamic Office 365 Groups. The functionality is welcome, as long as you can pay for it as every member who comes within the scope of a query used for a dynamic team needs an Azure AD P1 license.
Office 365 doesn’t include a way to export a list of Teams in a form that can be imported by Power BI, but PowerShell makes it an easy task to accomplish. Here’s a script to help solve the problem.
By default, the Groups policy for an Office 365 tenant allows group owners to add guest users to group membership. You can block this access if necessary, but it’s probably not what you want to do as blocking brings guest access to a complete halt across the tenant.
When you impose a block on certain domains, you’d like to think that applications like Teams will respect that block. As it turns out, if you have some lingering guests in your Azure Active Directory, the B2B collaboration policy might not be as effective as you’d hope.