Patch Redhat VM's in Azure
When you deploy a Redhat VM in Azure you should seeing an option “Azure Hybrid Benefit” (AHB).
You can find more about AHB here
To summarize, you can use your existing RHEL subscriptions you have for your on-premises can be extended to Azure as well that covers your Operating System cost and you will only pay for Infrastructure cost to Azure.

How to find if my running VM is enabled with AHB or not?
You can find it by, navigating to the configuration page of the VM and check the license information as like below

You can find all information’s about enabling / disabling the AHB thru Azure CLI or Azure portal in the following URL
https://docs.microsoft.com/en-us/azure/virtual-machines/linux/azure-hybrid-benefit-linux
It is mandate to have AHB enabled and you need to share us the Redhat subscription information to configure it in DesktopCentral to patch your Redhat VM’s running in your environment.