Figure out if we want an Application Gateway in front of the VMR Backflow service

[dkurepa]

We need to figure out if we want, and need an Application Gateway in front of the VMR Backflow service. It'd be a good idea to add it in the beginning, before anyone is using it

[dkurepa]

This is a low priority issue, we might tackle it at a later point

[dkurepa]

reopened as https://github.com/dotnet/arcade-services/issues/3884 in a different epic