I've been chatting with a lot of people about our VR 2020 experiences. The CCC wrote a blog post distilling some of the advice I've been giving people.
The entire five-day event was done using a combination of commercial (Slack, Zoom, Sli.do, Twitch) and custom services (especially for video streaming), with a social virtual experience hosted on a custom installation of Mozilla Hubs, an online platform for social VR experiences. We chose Hubs because it is web based and open-source, allowing it to be easily customized and accessible from almost any device (VR or not) using a modern web browser.
If you are considering moving your conference online, here are some tips from Blair:
If you want those tips, go read the post!