52 Red Hat OpenShift and IBM Cloud Paks on IBM Power Systems: Volume 1
Hub cluster also uses etcd, which is a distributed key value store to store the state of work 
requests and results from multiple clusters. It provides a set of REST APIs for various 
functions that it supports.
Multicloud Manager managed cluster
Managed cluster defines Multicloud manager Klusterlet. Klusterlet is an agent that is 
responsible for a single Kubernetes cluster. The managed cluster starts a connection to the 
hub cluster, receives and applies work requests, and returns results. The managed cluster 
connects to different services in the cluster for operations, such as Kubernetes API service.
IBM Multicloud Manager Application resources
After you configure an IBM Multicloud Manager hub cluster and a managed cluster, you can 
view and deploy applications with application resources. Your application is used to view only 
your resource, although other application resource examples are for deployment. A 
multi-cluster application uses a Kubernetes specification, but with more automation of the 
deployment and lifecycle management of resources to individual clusters.
IBM Multicloud Manager Governance and risk
After you configure an IBM Multicloud Manager hub cluster and a managed cluster, you can 
define IBM Multicloud Manager security risk and create policies with templates from the 
Governance and risk page. For more information see, IBM Knowledge Center.
For more information about IBM Multicloud Manager, see IBM Knowledge Center.