How do you create an Azure Function?

 You can create an Azure Function using the following steps:

1. Open the Azure portal and sign in to your account.
2. Click on the Create a Resource button in the left-hand pane and search for "Function App".
3. Click on the Function App option and then click on the Create button.
4. Fill in the required information, including the subscription, resource group, and function app name.
5. Choose the operating system, either Windows or Linux, and the hosting plan, either Consumption or App Service Plan.
6. Choose the runtime stack and version, such as Node.js, Python, .NET Core, or Java.
7. Choose the region where you want to deploy the function app.
8. Click on the Create button to create the function app.

Once the function app is created, you can create a new function by following these steps:

1. In the function app blade, click on the Functions option in the left-hand pane.
2. Click on the + button to create a new function.
3. Choose a template or create a custom function.
4. Choose a trigger type for the function.
5. Fill in the required information for the trigger and any input bindings.
6. Write the function code in your preferred programming language.
7. Test the function using the Test tab or the function URL.
8. Save and publish the function.