I built quiz.konfhub.com, a live-quizzing app for Azure enthusiasts, that can scale to ~100K concurrent participants.

I'll do a deep dive on how this serverless app was built on Azure using Web PubSub, Functions, CosmosDB, API Management, Redis Cache, Service Bus, Storage Accounts, Front Door, and more.

We'll also discuss the various perf & scalability challenges we encountered and overcame along the way.