My question, to be more clear, it is to create a server with mongodb on a cloud hosting (for example) and access it through another server.

Example:
I have a mobile app.
I hosted my mongoDB a cloud hosting (ubuntu).
I want to connect my app to the db on the server cloud.

**Is it possible? How?**

I'm joining this learning and my question was exactly MongoDB to create a server in a way that I could access it remotely.
Out of "localhost"? Different from all the tutorials I've seen.