sequenceDiagram
    participant DAG as DAG
    participant StartOp as StartOperator
    participant Sensor as StateSensor
    participant Trigger as StateTrigger
    participant Hook as AzureComputeHook
    participant Azure as Azure Compute API

    DAG->>StartOp: execute()
    StartOp->>Hook: start_instance(resource_group, vm_name)
    Hook->>Azure: begin_start(...)
    Hook->>Azure: poller.result() (when wait_for_completion=True)
    StartOp-->>DAG: success

    DAG->>Sensor: execute()
    Sensor->>Hook: poke() -> get_power_state()
    Hook->>Azure: instance_view(...)

    alt state already reached
        Sensor-->>DAG: success
    else state not reached + deferrable=True
        Sensor-->>Trigger: defer(trigger=AzureVirtualMachineStateTrigger)
        loop poll until target state
            Trigger->>Hook: async_get_power_state() [native async]
            Hook->>Azure: instance_view(...)
        end
        Trigger-->>Sensor: TriggerEvent(status=success)
        Sensor-->>DAG: execute_complete()
    end