Anyone who can run a Microsoft Teams meeting can now run a webinar using a modified version of a standard Teams meeting. Microsoft is quite clever in extending the standard functionality to be able to deliver the features needed to publish and deliver a webinar. Some rough edges exist, but because running a webinar is very like running a regular meeting, you can expect that this will be an extremely popular new feature.
https://practical365.com/teams-meetings-webinar-capability/
