Recently going through committed used discounts concept. I have a question. suppose, i have a VM with high capacity (like 20 vCPU and 180 GB Memory) but used only for 3 months starting now.

And a few other VMs in the same machine type series but with lesser configuration (eg: like 8vCPU and 30GB Memory) and long term with usage for 3 years (but provisioning 1 vm now, another after 1 month, another after 2 month etc..)

How do i go about purchasing CUD?

Is it like purchasing aggregation for the lesser config VMs for CUD-3 years so the powerful VM also makes use of it in the first 3 months and then other new lesser config VMs will make use of CUD once the powerful VM is deleted

Please suggest