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This article shows you how to use the Azure portal to create a function app that's hosted in Azure Functions. These hosting plan options, which support dynamic, event-driven scaling, are featured:
| Hosting option | Description |
|---|---|
| Flex Consumption plan | Linux-only plan that provides rapid horizontal scaling with support for managed identities, virtual networking, and pay-as-you-go billing. |
| Premium plan | Provides longer execution times, more control over CPU/memory, and support for containers and virtual networks. |
| Consumption plan | Original dynamic hosting plan, which supports portal development for some languages. |
Choose your preferred hosting plan at the top of the article. For more information about all supported hosting options, see Azure Functions hosting options.
If you don't have an Azure subscription, create a trial account before you begin.
Sign in to the Azure portal with your Azure account.
You must have a function app to host the execution of your functions. A function app lets you group functions as a logical unit for easier management, deployment, scaling, and sharing of resources.
Use these steps to create your function app and related Azure resources in the Azure portal.
From the Azure portal menu or the Home page, select Create a resource.
In the New page, select Function App.
Under Select a hosting option, select Flex Consumption > Select to create your app in a Flex Consumption plan. In this serverless hosting option, you pay only for the time your functions run. To learn more about different hosting plans, see Overview of plans.
On the Basics page, use the function app settings as specified in the following table:
Setting Suggested value Description Subscription Your subscription The subscription under which you create your new function app. Resource Group myResourceGroup Name for the new resource group in which you create your function app. You should create a new resource group because there are known limitations when creating new function apps in an existing resource group. Function App name Globally unique name Name that identifies your new function app. Valid characters are a-z(case insensitive),0-9, and-.Region Preferred region Select a region that's near you or near other services that your functions can access. Runtime stack Preferred language Choose a runtime that supports your favorite function programming language. Version Version number Choose the version of your installed runtime. Instance Size 2048 MB The instance memory size used for each instance of the app as it scales. Accept the default options in the remaining tabs, including the default behavior of creating a new storage account on the Storage tab and a new Application Insights instance on the Monitoring tab. You can also choose to use an existing storage account or Application Insights instance, and change Azure OpenAI, Networking, Deployment, and Authentication settings.
Select Review + create to review the app configuration you chose, and then select Create to provision and deploy the function app.
Select the Notifications icon in the upper-right corner of the portal and watch for the Deployment succeeded message.
Select Go to resource to view your new function app. You can also select Pin to dashboard. Pinning makes it easier to return to this function app resource from your dashboard.
From the Azure portal menu or the Home page, select Create a resource.
In the New page, select Compute > Function App.
On the Basics page, use the function app settings as specified in the following table:
Setting Suggested value Description Subscription Your subscription The subscription under which you'll create your new function app. Resource Group myResourceGroup Name for the new resource group in which you'll create your function app. You should create a new resource group because there are known limitations when creating new function apps in an existing resource group. Function App name Globally unique name Name that identifies your new function app. Valid characters are a-z(case insensitive),0-9, and-.Publish Code Option to publish code files or a Docker container. Runtime stack Preferred language Choose a runtime that supports your favorite function programming language. In-portal editing is only available for JavaScript, PowerShell, TypeScript, and C# script. C# class library, Java, and Python functions must be developed locally. Version Version number Choose the version of your installed runtime. Region Preferred region Select a region that's near you or near other services that your functions can access. Select Next : Hosting. On the Hosting page, enter the following settings:
Setting Suggested value Description Storage account Globally unique name Create a storage account used by your function app. Storage account names must be between 3 and 24 characters in length and can contain numbers and lowercase letters only. You can also use an existing account, which must meet the storage account requirements. Operating system Windows An operating system is pre-selected for you based on your runtime stack selection, but you can change the setting if necessary. In-portal editing is only supported on Windows. Plan Consumption (Serverless) Hosting plan that defines how resources are allocated to your function app. In the default Consumption plan, resources are added dynamically as required by your functions. In this serverless hosting, you pay only for the time your functions run. When you run in an App Service plan, you must manage the scaling of your function app. Select Next : Monitoring. On the Monitoring page, enter the following settings:
Setting Suggested value Description Application Insights Default Creates an Application Insights resource of the same App name in the nearest supported region. By expanding this setting or selecting Create new, you can change the Application Insights name or select a different region in an Azure geography where you want to store your data. Select Review + create to review the app configuration selections.
On the Review + create page, review your settings, and then select Create to provision and deploy the function app.
Select the Notifications icon in the upper-right corner of the portal and watch for the Deployment succeeded message.
Select Go to resource to view your new function app. You can also select Pin to dashboard. Pinning makes it easier to return to this function app resource from your dashboard.
From the Azure portal menu or the Home page, select Create a resource.
In the New page, select Compute > Function App.
On the Basics page, use the function app settings as specified in the following table:
Setting Suggested value Description Subscription Your subscription The subscription under which this new function app is created. Resource Group myResourceGroup Name for the new resource group in which to create your function app. Function App name Globally unique name Name that identifies your new function app. Valid characters are a-z(case insensitive),0-9, and-.Publish Code Option to publish code files or a Docker container. Runtime stack Preferred language Choose a runtime that supports your favorite function programming language. In-portal editing isn't currently supported for Python development. Region Preferred region Choose a region near you or near other services your functions access. Select Next: Hosting. On the Hosting page, enter the following settings:
Setting Suggested value Description Storage account Globally unique name Create a storage account used by your function app. Storage account names must be between 3 and 24 characters in length and may contain numbers and lowercase letters only. You can also use an existing account, which must meet the storage account requirements. Operating system Preferred operating system An operating system is pre-selected for you based on your runtime stack selection, but you can change the setting if necessary. Python is only supported on Linux. In-portal editing is only supported on Windows. Plan Premium Hosting plan that defines how resources are allocated to your function app. Select Premium. By default, a new App Service plan is created. The default Sku and size is EP1, where EP stands for elastic premium. To learn more, see the list of Premium SKUs.
When running JavaScript functions on a Premium plan, you should choose an instance that has fewer vCPUs. For more information, see Choose single-core Premium plans.Select Next: Monitoring. On the Monitoring page, enter the following settings:
Setting Suggested value Description Application Insights Default Creates an Application Insights resource of the same App name in the nearest supported region. By expanding this setting, you can change the New resource name or choose a different Location in an Azure geography to store your data. Select Review + create to review the app configuration selections.
On the Review + create page, review your settings, and then select Create to provision and deploy the function app.
Select the Notifications icon in the upper-right corner of the portal and watch for the Deployment succeeded message.
Select Go to resource to view your new function app. You can also select Pin to dashboard. Pinning makes it easier to return to this function app resource from your dashboard.
You can now deploy a code project to the function app resources you created in Azure.
You can create, verify, and deploy a code project to your new function app from these local environments: