This is a great tip and feature that I was really happy to see implemented. Not only can you live stream a Webex meeting or Event (Webinar) to Youtube Live, but you can use this feature to stream to any RTMP ingest endpoint such as other CDNs (like CacheFly, Cloudflare, or AWS) or other platforms like Facebook Live, Panopto, Wowza, etc. This is a great way to augment your attendees and create experiences using Webex to keep presenters and audiences connected while leveraging external platforms to scale your webinar to theoretical unlimited viewers!