When I say it (and I would guess outside of people who either contribute to Kubernetes or are using it to build their own PaaS) I mean a managed service like GKE. When I attempted to set my own cluster up all the confusion was around all of the choices to make, what container networking stack, etcd, and so on. GKE gives you an easy button for simpler architectures where you just have some containers and you want them to go in a cluster.