Say there are 4 teams. Team A, B, C and D.
One scrum master- say John who is a part of nexus integration team is also a scrum master for Team A.
But what about team B, C and D?
They need to have their own scrum master. (Though, John can be a Scrum master for A, B , C and D but he is not willing for the same).
So, in situation like this can there be 2 , 3 or 4 scrum masters out of which only one is a part of integration team??