The application currently can handle well over 1,000 user requests per second. I'd like it to be able to hand 20,000-80,000 simultaneous users.

It uses SignalR to maintain an open web socket. It's already built N-tier with Front,Middle,Back, etc.

I need to find a consulting firm that knows Azure inside and out and can truly understand and scale.

Most of the time we need nearly nothing. But in peak hours/days we have to be able to handle a LOT.

The solution would involved scaling perhaps horizontally but also vertically, would need to handle Loadbalancing of a SignalR connection, etc.

Suggestions for a team to talk to?

Thanks!