Advices on server implementation for server/client structure iOS App development?

Question

There are must be a lot of apps that are designed to communicate with server. My question is only about App installed on iOS device + Server side service interaction. Web app is

Answer 1

This is a huge question and I don't think there is a best answer. It most depends on what you care about, such as how quickly the development process, how easily the implementation, etc.

And which one is popular, which one is cool, I don't think it make really sense.

In my personal opinion, I'm good at ASP.NET and I can get Windows server easily, so I'll start with an ASP.NET service to provides data.

And, to be continued.