Cannot add App Service to App Service Environment v3

Question

Hi everyone,

I created a new App Service Environment V3, which was successfully created. From my understanding I should now be able to create a new Web App and select the ASE as my region - but it is not listed in the Select box. Same resource group etc, checked that.

Any hints on how to add an App Service to my ASE? Right now I pay for nothing :/

Thanks
Christian

Answer 1

Hi @Christian Loose

The App Service Environment (ASE) is a single tenant deployment of the App Service that injects into your Azure Virtual Network (VNet). A deployment of an ASE will require use of one subnet. This subnet can't be used for anything else other than the ASE.

Before you create your ASE
After your ASE is created, you can't change:

Location
Subscription
Resource group
Azure Virtual Network (VNet) used
Subnets used
Subnet size
Name of your ASE
The subnet needs to be large enough to hold the maximum size that you'll scale your ASE. Pick a large enough subnet to support your maximum scale needs since it can't be changed after creation. The recommended size is a /24 with 256 addresses.

please refer below link for more details
https://learn.microsoft.com/en-us/azure/app-service/environment/creation#before-you-create-your-ase

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