What is the best way to write back-end for IOS applications?

Question

iOS

Hello everyone!))
I am developing applications for ios. Recently, the question arose about choosing a language for developing back-end programs (server side) for applications.
So far, the choice has fallen between three languages: Node.js, Ruby, Java.
Please advise, or suggest your own version, what, in your opinion, is the best way to develop the back-end part of applications?

Answer 1

It all depends on the functionality you need. We have implemented APIs, some of which are in PHP (Laravel), some are in Ruby. They give JSON and the application itself understands what to do with it :)

Answer 2

Rhetorical question :)
On what is more comfortable to write on, and what eventually works quickly and stably. The application itself, which you write, in fact, does not care what the backend is written on. If only it would process requests correctly and give the correct answers (whether it be JSON, XML, or something else).

Answer 3

Java of course