Product : Microsoft Corp, Azure Stack/1903, IaaS + PaaS
Feature : VM to host anti-affinity, Compute, Infrastructure Services
Content Owner:  Bhagyashri (Shri) Bhagvat
Summary
Azure Stack provides Availability Sets which replicate the VM across different hosts for high availability thus enforcing host anti-affinity
Details
https://docs.microsoft.com/en-us/azure-stack/user/azure-stack-vm-considerations