Nowadays cloud computing is becoming more important and the current trend is to engineer the new web applications to be cloud-native, to split up the application into micro-services, each one containerized and deployed as an independent part of a bigger application. A technology that broke through the cloud market is Kubernetes, a project that allows orchestrating containers in a cloud environment, creating an abstraction layer that hides the physical machines, allowing to manage them as a single entity. However, a new trend in the last years is to extend this abstraction to a group of clusters to create another abstraction layer to allow managing them like a single entity.