Azure compute resources that are used to create and manage groups of heterogeneous load-balanced virtual machines.
Hello @Pankaj Kumar ,
Thank You for posting your query on Microsoft QnA.
You cannot move an existing VM into an availability zone after it has been created. You can only do that during VM creation.
Hope this clarifies your doubt. Please let me know if you have any further questions?
Reference : Creation of VMSS with availability zones
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