Correct, it is not opensource but you can use it for free on up to 3 nodes. Not sure what "enterprisey" means but to me that sounds like it works well for larg

Correct, it is not opensource but you can use it for free on up to 3 nodes. Not sure what "enterprisey" means but to me that sounds like it works well for large deployments and that is true. We have customers running us with Mesos on up to 1000 nodes and K8s on hundreds of nodes.