Scaling SignalR with Windows Azure Service Bus
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I have an application that uses SignalR to connect users on my site for things like chat.  If I am only first opening my site to the public, I would assume I only need one instance for the first few months of usage (as long as demand doesn't require another instance).  Can i just run my signalR hub class in the same instance without using Windows Azure Service Bus and then move it to the service bus once i use 2 or more instances?

Also one quick side question, on the Windows Azure Service Bus site it says:

`The Service Bus enables up to 100 concurrent connections to an entity.`

does this mean only 100 concurrent users connected to the service bus? or 100 concurrent connections to instances?  I could see how only 100 concurrent users could be very limited in terms of large scale websites, so Im assuming it means instances?  A little confused on how the architechture would work once you move to the service bus with concurrent connected users.