Demio webinars are 100% real-time. There is virtually zero latency between you (the presenter) and your attendees. We believe this is the only way to do live streaming, as it allows for real-time interaction with your audience, giving everyone the best experience possible.
We also run on our own streaming engine and don't rely on YouTube streaming with insane 30-second delays. We find that such a large delay would degrade the quality of both the platform and the presentation for everyone involved. We think you deserve the best. :)