07-11-2018 07:50 AM
07-11-2018 08:07 AM
Teams uses a different kind of architecture to Skype, meetings aren't linked to a region. When the first person joins the edge nearest to them starts the meeting, the rest of the attendees still access their nearest edge but traverse Microsoft network to where the meeting started.
07-11-2018 11:02 AM
I've not seen it written, but that was the explanation from the developers. Maybe try watching