Are there services for organizing broadcasts/webinars on your site?

Question

Video broadcast

There is a site.
The user-author visits the site and decides to organize a webinar/broadcast, and all broadcast settings should preferably be done on the site itself and not on the service that is used to organize the broadcast.
And this site is not for 1 person, but for many people.
Are there such services that would be built into the site and have an API that would allow from your site to arrange broadcasts on your site through this same service, but so that the user works with my site and not with the service?

Answer 1

wowza

Answer 2

BigBlueButton
OpenMeetings