azure scale set vs availability set

  Availability Set Scale Set Description A group of discrete virtual machines spread across fault domains. A group of identically configured virtual machines spread across fault domains. Workloads Use Availability Set for predictable workloads. Use Scale Set for unpredictable workloads (autoscale). Domain default Has 3 fault domains and 5 update domains by default Has 5 fault domains and 5 update domains by default Configuration Virtual machines are created from different images and configurations. Virtual machines are created from the same image and configuration. Distribution Virtual machines are automatically distributed within a data center. Virtual machine scale sets can be distributed [...]