YouTube allows free live broadcasting to unlimited numbers of viewers who can comment back in the chat text box for feedback. It is ideal for briefing the public or even (as unlisted) for a large corporation to its staff.
To do this you need to allow at least 24 hours to have your account verified, and for a mobile only broadcast you need to have 1,000 followers (does not apply to desktop/laptop broadcasts).
Free and open source Jitsi video conferencing integrates with YouTube Live to achieve its unlimited broadcast capability.
See how to do it step by step at How to Go Live on YouTube
This wikiHow teaches you how to broadcast a live stream on YouTube. You can use both computers and mobile items to do this, but you'll first need to verify your account to register for streaming. You can also stream desktop content, such...