There’s also the hidden Teams (Free) tier for business, not to be confused with the now discontinued Teams Free (classic), all of which are not the same as Teams (free) for personal use, or the Teams Exploratory license, which acts as a kind of trial for new users. Bonus points for knowing which of these versions can be upgraded into another.

Also try to explain to people with a straight face that they can’t actually Win11 built-in Teams integration because it isn’t compatible with business versions ofo Teams tand that they need to be careful which version they start from the start menu.