Hello, @Bharat K !
What do I do if VM vCPUs aren't available in my region?
There are two components to this: available quota for your subscription and SKU availability for the region you are interested in.
You can submit a request for a quota increase if vCPU resources are available in that region. If not, you can look for a region that has more vCPUs available for the VM SKUs you are interested in using the following command in Azure CLI:
az vm list-skus --location centralus --size Standard_D --all --output table
Looking at the VM sizes you are currently interested in and the regions you've listed, I would recommend looking at South Central US which has DCsv2 and DCsv3.
How do I create a Dedicated Host in Azure?
You can find complete instructions for creating a host group, creating a dedicated host, and creating or adding VMs/VMSSs to your dedicated host here:
https://learn.microsoft.com/en-us/azure/virtual-machines/dedicated-hosts-how-to?tabs=portal
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