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Create your first Azure Function | Microsoft Docs
Build your first Azure Function, a serverless application, in less than two minutes.
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Create your first Azure Function

Overview

Azure Functions is an event-driven, compute-on-demand experience that extends the existing Azure application platform with capabilities to implement code triggered by events occurring in other Azure services, SaaS products, and on-premises systems. With Azure Functions, your applications scale based on demand and you pay only for the resources you consume. Azure Functions enables you to create scheduled or triggered units of code implemented in various programming languages. To learn more about Azure Functions, see the Azure Functions Overview.

This topic shows you how to use the Azure Functions quickstart in the portal to create a simple "hello world" JavaScript function that is invoked by an HTTP-trigger. You can also watch a short video to see how these steps are performed in the portal.

Watch the video

The following video shows how to perform the basic steps in this tutorial.

[!VIDEO https://channel9.msdn.com/Series/Windows-Azure-Web-Sites-Tutorials/Create-your-first-Azure-Function-simple/player]

Create a function from the quickstart

A function app hosts the execution of your functions in Azure. Follow these steps to create a function app with the new function. The function app is created with a default configuration. For an example of how to explicitly create your function app, see the other Azure Functions quickstart tutorial.

Before you can create your first function, you need to have an active Azure account. If you don't already have an Azure account, free accounts are available.

  1. Go to the Azure Functions portal and sign-in with your Azure account.

  2. Type a unique Name for your new function app or accept the autogenerated one, select your preferred Region, then click Create + get started. Note that you must enter a valid name, which can contain only letters, numbers, and hyphens. Underscore (_) is not an allowed character.

  3. In the Quickstart tab, click WebHook + API and JavaScript, then click Create a function. A new predefined JavaScript function is created.

  4. (Optional) At this point in the quickstart, you can choose to take a quick tour of Azure Functions features in the portal. After you have completed or skipped the tour, you can test your new function by using the HTTP trigger.

Test the function

[!INCLUDE Functions quickstart test]

Next steps

[!INCLUDE Functions quickstart next steps]

[!INCLUDE Getting Started Note]