You are developing an application. The application stores all application settings in the Azure App Configuration service. You plan to deploy the application in an Azure virtual network $($VNet$).$

You need to ensure that network traffic between the application and the App Configuration store uses the VNet and remains on the Microsoft backbone network.

Which solution should you use?

Select only one answer.

system$-$assigned managed identity

user$-$assigned managed identity

private endpoint

customer$-$managed key

ExpressRoute with private$-$peering