[Leon]

Once you've automated the entire process of bringing up a container cluster with monitoring, metrics, logging, etc then it becomes trivial to make as many as you want. The same is done with separate virtual networks for security concerns.

It becomes as simple as asking what name the cluster should have.

It also makes sense from managing resource concerns to some extent, such as a cluster with cheap instances for low priority applications but need HA support or a cluster with beefy instances in a subnet that has fewer hops should be used for edge tier applications.