Additional features, settings, or issues not covered by specific Microsoft Teams categories
I think that's the thing, as long as all parties (internal and external) have Teams, then it doesn't matter. It works as expected. We did an event and had external parties come in and when they already have Teams then perfect. Those who did not have teams in their environment were not able to join and were thrown into the event as a guest and watched the event. Even though we specified their address as presenter. The only work around was we had to have them dial in to the event with the presenter dial in and that worked. Not ideal but was a good work around.