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Azure Functions Consumption plan hosting

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When you're using the Consumption plan, instances of the Azure Functions host are dynamically added and removed based on the number of incoming events. The Consumption plan, along with the Flex Consumption plan, is a fully serverless hosting option for Azure Functions.

Benefits

The Consumption plan scales automatically, even during periods of high load. When running functions in a Consumption plan, you're charged for compute resources only when your functions are running. On a Consumption plan, a function execution times out after a configurable period of time.

For a comparison of the Consumption plan against the other plan and hosting types, see function scale and hosting options.

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If you want the benefits of dynamic scale and execution-only billing, but also need to integrate your app with virtual networks, you should instead consider hosting your app in the Flex Consumption plan.

Billing

Billing is based on number of executions, execution time, and memory used. Usage is aggregated across all functions within a function app. For more information, see the Azure Functions pricing page.

To learn more about how to estimate costs when running in a Consumption plan, see Understanding Consumption plan costs.

Create a Consumption plan function app

When you create a function app in the Azure portal, the Consumption plan is the default. When using APIs to create your function app, you don't have to first create an App Service plan as you do with Premium and Dedicated plans.

In Consumption plan hosting, each function app typically runs in its own plan. In the Azure portal or in code, you may also see the Consumption plan referred to as Dynamic or Y1.

Use the following links to learn how to create a serverless function app in a Consumption plan, either programmatically or in the Azure portal:

You can also create function apps in a Consumption plan when you publish a Functions project from Visual Studio Code or Visual Studio.

Multiple apps in the same plan

The general recommendation is for each function app to have its own Consumption plan. However, if needed, function apps in the same region can be assigned to the same Consumption plan. Keep in mind that there is a limit to the number of function apps that can run in a Consumption plan. Function apps in the same plan still scale independently of each other.

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