template.json

{
    "$schema": "https://schema.management.azure.com/schemas/2015-01-01/deploymentTemplate.json#",
    "contentVersion": "1.0.0.0",
    "parameters": {
        "uniqueResourceNameSuffix": {
            "type": "string",
            "defaultValue": "[uniqueString(subscription().subscriptionId, resourceGroup().id)]",
            "metadata": {
                "description": "The suffix to add to resource names that require global uniqueness."
            }
        },
        "functionFile": {
            "type": "string",
            "metadata": {
                "description": "The contents of the function's `run.csx` file."
            }
        },
        "applicationInsightsLocation": {
            "type": "string",
            "defaultValue": "westus2",
            "allowedValues": [
                "eastus",
                "southcentralus",
                "westus2",
                "northeurope",
                "westeurope",
                "southeastasia"
            ],
            "metadata": {
                "description": "The location in which to deploy Application Insights, since it supports a subset of Azure regions."
            }
        }
    },
    "variables": {        
        "functionsAppServicePlanName": "FunctionAppServicePlan",
        "functionsAppName": "[concat('fn', parameters('uniqueResourceNameSuffix'))]",
        "functionName": "MyFunction",

        "functionsStorageAccountName": "[variables('functionsAppName')]",
        "functionsStorageAccountResourceId": "[resourceId('Microsoft.Storage/storageAccounts', variables('functionsStorageAccountName'))]",

        "applicationInsightsName": "FunctionAppInsights"
    },
    "resources": [
        {
            "name": "[variables('functionsStorageAccountName')]",
            "type": "Microsoft.Storage/storageAccounts",
            "location": "[resourceGroup().location]",
            "apiVersion": "2018-02-01",
            "sku": {
                "name": "Standard_LRS"
            },
            "kind": "StorageV2",
            "properties": {
                "accessTier": "Hot",
                "supportsHttpsTrafficOnly": true,
                "encryption": {
                    "services": {
                        "blob": {
                            "enabled": true
                        }
                    },
                    "keySource": "Microsoft.Storage"
                }
            }
        },

        {
            "name": "[variables('functionsAppServicePlanName')]",
            "type": "Microsoft.Web/serverfarms",
            "location": "[resourceGroup().location]",
            "apiVersion": "2016-09-01",
            "sku": {
                "name": "Y1",
                "tier": "Dynamic",
                "size": "Y1",
                "family": "Y",
                "capacity": 0
            },
            "kind": "functionapp",
            "properties": {
                "workerTierName": null,
                "adminSiteName": null,
                "hostingEnvironmentProfile": null,
                "perSiteScaling": false,
                "reserved": false,
                "targetWorkerCount": 0,
                "targetWorkerSizeId": 0
            }
        },
        {
            "name": "[variables('functionsAppName')]",
            "type": "Microsoft.Web/sites",
            "location": "[resourceGroup().location]",
            "apiVersion": "2016-08-01",
            "kind": "functionapp",
            "properties": {
                "enabled": true,
                "serverFarmId": "[resourceId('Microsoft.Web/serverfarms', variables('functionsAppServicePlanName'))]",
                "reserved": false,
                "siteConfig": {
                    "ftpsState": "Disabled"
                }
            },
            "resources": [
                {
                    "name": "[variables('functionName')]",
                    "type": "functions",
                    "apiVersion": "2015-08-01",
                    "properties": {
                        "config": {
                            "bindings": [
                                {
                                    "type": "httpTrigger",
                                    "direction": "in",
                                    "name": "req",
                                    "methods": [
                                      "get"
                                    ]
                                  }
                            ],
                            "disabled": false
                        },
                        "files": {
                            "run.csx": "[parameters('functionFile')]"
                        }
                    },
                    "dependsOn": [
                        "[resourceId('Microsoft.Web/sites', variables('functionsAppName'))]"
                    ]
                },
                {
                    "name": "appsettings",
                    "type": "config",
                    "apiVersion": "2014-11-01",
                    "properties": {
                        "APPINSIGHTS_INSTRUMENTATIONKEY": "[reference(resourceId('Microsoft.Insights/components', variables('applicationInsightsName')), '2014-04-01').InstrumentationKey]",
                        "AzureWebJobsDashboard": "[concat('DefaultEndpointsProtocol=https;AccountName=', variables('functionsStorageAccountName'), ';AccountKey=', listKeys(variables('functionsStorageAccountResourceId'),'2015-05-01-preview').key1)]",
                        "AzureWebJobsStorage": "[concat('DefaultEndpointsProtocol=https;AccountName=', variables('functionsStorageAccountName'), ';AccountKey=', listKeys(variables('functionsStorageAccountResourceId'),'2015-05-01-preview').key1)]"
                    },
                    "dependsOn": [
                        "[resourceId('Microsoft.Web/sites', variables('functionsAppName'))]",
                        "[resourceId('Microsoft.Insights/components', variables('applicationInsightsName'))]"
                    ]
                }
            ],
            "dependsOn": [
                "[resourceId('Microsoft.Web/serverfarms', variables('functionsAppServicePlanName'))]"
            ]
        },

        {
            "name": "[variables('applicationInsightsName')]",
            "type": "Microsoft.Insights/components",
            "apiVersion": "2014-04-01",
            "location": "[parameters('applicationInsightsLocation')]",
            "kind": "other",
            "properties": {
                "applicationId": "[variables('applicationInsightsName')]"
            }
        }
    ]
}