Example ARM template for Storage Account

azuredeploy.json

{
    "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
    "contentVersion": "1.0.0.0",
    "parameters": {
        "storageAccountPrefix": {
            "type": "string"
        },
        "location": {
            "type": "string",
            "defaultValue": "[resourceGroup().location]",
            "metadata": {
                "description": "Location for all resources."
            }
        }
    },
    "variables": {
        "storageAccountName": "[concat(parameters('storageAccountPrefix'), uniquestring(resourceGroup().id))]"
    },
    "resources": [
        {
            "type": "Microsoft.Storage/storageAccounts",
            "apiVersion": "2019-04-01",
            "name": "[variables('storageAccountName')]",
            "location": "[parameters('location')]",
            "sku": {
                "name": "Standard_LRS"
            },
            "kind": "StorageV2",
            "properties": {
            }
        }
    ],
    "outputs": {
        "storageAccountName": {
            "type": "string",
            "value": "[variables('storageAccountName')]"
        }
    }
}