The recording of the talk “Real-Time Serverless Apps with .NET, Azure Functions and Azure SignalR” by Rainer Stropek is now on YouTube at https://youtu.be/TvLABG6Cl3Y available.
Rainers recording is available here.
The Code- Samples can be found on GitHub at https://github.com/rstropek/Samples/tree/master/AsyncBlazor./