XOS adopts an Everything-as-a-Service model. This includes platform (infrastructure) services like Kubernetes and OpenStack. Either or both can be integrated into an XOS-managed system, and like any other service, they have models and synchronizers. The only difference is that their models are part of the XOS core (e.g., Slices, Instances, Networks) rather than service extensions. This section describes three example platform services in more detail: