App Service Environment is available in a number of different types and versions.

Azure's App Service Environment has the following versions:

• App Service Environment v1: This version has the common benefits of App Service Environments, discussed previously
• App Service Environment v2: This version comes with fewer complications, as you will not have to configure frontends and workers to auto-scale your App Service plan.

Azure App Service Environment offerings are also divided along the lines of accessibility:

• External: This type exposes the apps on App Service Environment to allow for access via the internet by either the public IP address assigned to it, or the external domain name provided by Azure, such as *.p.azurewebsites.net or a custom domain name.
• Internal: This type exposes the apps internally on the virtual network it is built on, via an internal load balancer. If you want to expose it to the internet, you will have to add a custom domain name that will resolve to the internal load balancer, as it does not provide any external domain names, nor a public IP address.