1. The connection
It is what fails most. The ideal is a wired connection dedicated to the stream, not shared with the guests' wifi. You need to confirm the upload speed with the venue, not just the download speed.
2. The audio
An average picture with good audio holds up; the opposite does not. The stream's audio should come straight from the event's mixing console or from dedicated microphones, not from a camera microphone.
3. Cameras and graphics
With several cameras you can switch between the wide shot, the speaker and the audience. Graphics with each speaker's name and the company logo make the stream look professional.
4. The platform
YouTube, Facebook, Zoom or a private platform: each has its own requirements. You need to define early where it is streamed, who has access and whether the recording stays published afterwards.
5. The test
A test on site, with the real connection and real audio, is the best guarantee. Ideally the day before; if that is not possible, a few hours before the event.
