ZServer was not supposed to survive Python2 EOL. Why, I wondered, and spent two Plone sprints replacing Medusa with Twisted Web Server, Autobahn and ZeroMQ. All of sudden, I had Python 3 compatible ZServer with HTTP/2 support and modern WebSocket integration. If you would like to have that too, come to hear the state of these things, new possibilities for asynchronous tasks, my plan for permission aware WebSocket publish-subscribe-protocol, and what is missing to make this kind of ZServer all the way to PYPI.