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Azure has had nested virt available for a while too. I used to run HyperV in cloud

• whopdrizzard 8mo ago
  Azure has recently announced "direct virtualization", which is a sort of logical nesting, in which users can sub-partition their L1 VMs into virtual L2 VMs that are technically siblings. https://techcommunity.microsoft.com/blog/azurecompute/scaling-azure-compute-for-performance/4474662 https://techcommunity.microsoft.com/blog/azurecompute/scalin... (I work there)
  • firesteelrain 8mo ago
    Cool, so that’s the new and preferred model for nested or sibling virt?
    • whopdrizzard 8mo ago
      eventually yes, this is supposed to remove the perf tax of nested virtualization (less world/context switches on vm_exits) and unlocks some new use cases (pass through hardware from your VM to the sibling-guest).
      • firesteelrain 8mo ago
        Interesting ! I stopped working in Azure back in August. But I know of teams still using the nested virt HyperV setup I created to allow multicast to between VMs in Cloud.