virtualMachines.json

{
  "$schema": "https://schema.management.azure.com/schemas/2015-01-01/deploymentTemplate.json#",
  "contentVersion": "2017.09.01.0",
  "parameters": {
    "name": {
      "type": "string",
      "metadata": {
        "description": "Specifies the name of the virtual machine. This name should be unique within the resource group."
      }
    },
    "tags": {
      "type": "object",
      "metadata": {
        "description": "Specifies the tags that are assigned to the virtual machine."
      }
    },
    "plan": {
      "type": "object",
      "defaultValue": {},
      "metadata": {
        "description": "Specifies information about the marketplace image used to create the virtual machine. This element is only used for marketplace images."
      }
    },
    "properties": {
      "type": "object",
      "metadata": {
        "description": "Specifies the properties of the virtual machine."
      }
    },
    "DependsOn": {
      "type": "array",
      "defaultValue": [],
      "metadata": {
        "description": "Pass dependencies"
      }
    }
  },
  "variables": {
    "comment": {
      "definition": "https://docs.microsoft.com/en-us/rest/api/compute/virtualmachines/virtualmachines-create-or-update"
    },
    "virtualMachineArray": [
      {
        "apiVersion": "2017-03-30",
        "type": "Microsoft.Compute/virtualMachines",
        "name": "[parameters('name')]",
        "location": "[resourceGroup().location]",
        "dependsOn": "[if(empty(parameters('DependsOn')),json('null'),parameters('DependsOn'))]",
        "properties": "[parameters('properties')]",
        "resources": []
      },
      {
        "apiVersion": "2017-03-30",
        "type": "Microsoft.Compute/virtualMachines",
        "name": "[parameters('name')]",
        "location": "[resourceGroup().location]",
        "dependsOn": "[if(empty(parameters('DependsOn')),json('null'),parameters('DependsOn'))]",
        "plan": "[parameters('plan')]",
        "properties": "[parameters('properties')]",
        "resources": []
      }
    ],
    "virtualMachine": "[if(empty(parameters('plan')),variables('virtualMachineArray')[0],variables('virtualMachineArray')[1])]"
  },
  "resources": [
    {
      "name": "CreateVirtualMachine",
      "type": "Microsoft.Resources/deployments",
      "apiVersion": "2016-09-01",
      "dependsOn": [ ],
      "properties": {
        "mode": "Incremental",
        "template": {
          "$schema": "https://schema.management.azure.com/schemas/2015-01-01/deploymentTemplate.json#",
          "contentVersion": "1.0.0.0",
          "resources": "[createarray(variables('virtualMachine'))]"
        }
      }
    }
  ],
  "outputs": {
    "virtualMachine": {
      "type": "object",
      "value": "[variables('virtualMachine')]"
    }
  }
}