@AliSh Red Hat OpenShift Service on AWS (ROSA) provides a model that allows Red Hat to deploy clusters into a customer’s existing Amazon Web Service (AWS) account.
Refer : https://docs.redhat.com/en/documentation/red_hat_openshift_service_on_aws/4/html/install_rosa_classi...
Essentially, with Self-managed OpenShift (OCP), you gain complete control over your cluster but also bear the full operational responsibility for every component. Moving to ROSA Classic, Red Hat takes on the management of the control plane for you, which alleviates a significant burden, though you remain responsible for running and incurring costs for all your worker nodes. The most streamlined option, ROSA HCP (Hosted Control Plane), further reduces your AWS footprint and operational overhead by entrusting the control plane management entirely to Red Hat.
https://www.redhat.com/en/technologies/cloud-computing/openshift/aws/faq
https://aws.amazon.com/awstv/watch/43521579bc1/
https://aws.amazon.com/blogs/containers/diving-into-red-hat-openshift-service-on-aws-rosa-with-hoste...
