The paid version has a feature where the organization admins can listen and watch in conversations without anybody noticing or giving consent. I am quite sure that doing so would be illegal where I live (Germany).
replies(5):
> Administrators also have the ability to join any call at any time on their organization’s instance of Zoom, without in-the-moment consent or warning for the attendees of the call.
On the other hand, I live in a country where it is considered polite to knock on doors and wait until the door is opened from the inside. And no one is straightly accused of idling behind closed doors.