Zwift was already popular, thanks to COVID-19 it has become the virtual cycling destination. Recent updates have included tons of new group rides, races, fundraisers and even the ability to select from two guests worlds at all times (in addition to Watopia).
Even Ted King has been getting into the action (I recommend following him on Strava, his Zwift race states have been nuts). Above he gets some Zwift coaching from Pro-Zwifter, Kevin Bouchard Hall. Good tips for us mortals as well.