Hi Zoran,
I can't answer all of your questions but check out https://enovation.ie/moodle-and-microsoft-office-365-integration/ if you haven't already
Also check out https://moodle.org/plugins/atto_teamsmeeting
I can't imagine you could get any true integration without O365 authentication but I think it is possible to allow students to attend Teams meetings from links in Moodle. Whoever looks after your Teams environment would need to allow guests to attend meetings.
Catherine
I can't answer all of your questions but check out https://enovation.ie/moodle-and-microsoft-office-365-integration/ if you haven't already
Also check out https://moodle.org/plugins/atto_teamsmeeting
I can't imagine you could get any true integration without O365 authentication but I think it is possible to allow students to attend Teams meetings from links in Moodle. Whoever looks after your Teams environment would need to allow guests to attend meetings.
Catherine