template.json

{
    "$schema": "http://schema.management.azure.com/schemas/2015-01-01/deploymentTemplate.json#",
    "contentVersion": "1.0.0.0",
    "parameters": {
        "aspname": {
            "type": "string"
        },
        "location": {
            "type": "string"
        },
        "sku": {
            "type": "string",
            "defaultvalue": "Free"
        },
        "skuCode": {
            "type": "string",
            "defaultvalue": "F1"
        },
        "workerSize": {
            "type": "string"
        },
        "workerSizeId": {
            "type": "string"
        },
        "numberOfWorkers": {
            "type": "string"
        }
    },
    "resources": [
        {
            "apiVersion": "2016-03-01",
            "name": "[parameters('aspname')]",
            "type": "Microsoft.Web/serverfarms",
            "location": "[parameters('location')]",
            "kind": "",
            "tags": null,
            "properties": {
                "name": "[parameters('aspname')]",
                "workerSize": "[parameters('workerSize')]",
                "workerSizeId": "[parameters('workerSizeId')]",
                "numberOfWorkers": "[parameters('numberOfWorkers')]",
                "reserved": false,
                "hostingEnvironment": ""
            },
            "sku": {
                "Tier": "[parameters('sku')]",
                "Name": "[parameters('skuCode')]"
            }
        }
    ]
}