DCOS is an interesting description, as the idea of a data centre (to my tiny mind at least) is made more fuzzy by concepts like AWS AZs. Do people expect that

DCOS is an interesting description, as the idea of a data centre (to my tiny mind at least) is made more fuzzy by concepts like AWS AZs. Do people expect that the 'DC' will span AZs, regions even? Or is the separation of these things valuable in some way? How about the idea of dev vs prod environments? Will the isolation provided be strong enough that we'll happily drop everything onto a single cluster of machines?