You can use the Azure App Service Virtual Network Integration to deploy your application inside a VNet. This enables access from your application to other services, VMs, or databases that are deployed inside the same VNet as well.
To establish the connection from your application to the VNet, Azure App Service VNet integration uses a point-to-site VPN with a dynamic routing gateway. By using the point-to-site type of VPN connection, there is only one connection created for the VM on which your app is hosted. Other resources that are deployed inside the same App Service plan, are not connected. When you want to set up a connection for that resources as well, you have to set up a separate point-to-site VPN connection for each resource that resides in the App Service plan.
This point-to-site VPN connects to an Azure VPN Gateway, which...