Re: Redmond's Windows Cloud?
"Isn't that Windows Cloud limited by the scalability of Windows Server?"
That's a pretty high limit. See https://technet.microsoft.com/en-us/windows-server-docs/compute/hyper-v/plan/plan-for-hyper-v-scalability-in-windows-server-2016
"Or is Microsoft secretly running Linux on their Cloud
They certainly run Linux on their cloud (~30% of VMs). If you mean does their cloud run on Linux then that likely would limit scalability. There are plenty of benchmarks that show that Hyper-V outperforms say KVM.
"with their Linux switches"
The SAI API is, in principle, cross-platform, defined for both Windows and Linux, but much of the vendor switch hardware is supported best, or even exclusively, in Linux. Hence why Microsoft used Linux for network hardware.
Biting the hand that feeds IT
