I feel like this is the most scummy part of this whole thing.
I'm still paying Microsoft around a hundred bucks a month to host the servers. :p
A bit OT, but do you mean the servers for AppGet?
Yeah, there is quite a bit of background infrastructure to allow checking for installed app updates, search, and automatically updating package manifests when a developer releases an update.
Are you using an App Service, and is the infrastructure documented publicly?
I'm an architect, so just keen to understand your architecture on the backend :)