For Azure Functions, the consumption plan and App Service Plan can both be utilized:

• Consumption plan: In consumption plan hosting, we only pay for the time of execution of the function and not for the entire duration.
• App Service plan: In App Service plan hosting, we need to pay for all the resources allocated under the App Service plan for the entire time the App Service plan exists:

In earlier chapters, we have utilized the consumption plan for all our functions. Go to App Services and verify the plan:

Go to Function Apps in Azure Portal and verify the App Service plan; it is the same as the consumption plan:

Let's see how to create Azure Functions in the App Service plan:

1. Create a new Function App.
2. In the App Service plan, click on Create New.
3. Provide the App Service plan name, Location, and Pricing tier details.

4. Click on OK:

5. Click on Create to create the Function App in the App Service plan:

6. Now, we have two Function Apps in the Azure dashboard available. One has the consumption plan while the other has the App Service plan:

In the next section, we will list out some best practices for writing Azure Functions in order to utilize serverless architecture effectively for day-to-day usage.