Sveltos is a set of Kubernetes controllers that run in the management cluster. From the management cluster, Sveltos can manage add-ons and applications on a fleet of managed Kubernetes clusters. It is a declarative tool to ensure that the desired state of an application is always reflected in the actual state of the Kubernetes managed clusters.
In this video Colin Lacy covers the core features of cluster configuration and add-on management.
If you want to know more about ProjectSveltos check out the GitHub repo