Zoom is a cloud-based video conferencing service you can use to virtually meet with others - either by video or audio-only or both, all while conducting live chats - and it lets you record those sessions to view later.
The host of a Zoom meeting must create an account, however anybody can join a zoom meeting if they have the meeting ID and password (or a link that provides both). Students or parents do not need to create a Zoom account to join a meeting.