I'm so excited I finally managed to build a dedicated server!  
Now I'd like to pay to have some online cloud hosting to have it running.  
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Can anyone suggest an inexpensive place I could do this?  
And maybe what that process would look like? (ie. I have the Unreal server folder - then what?)  


For reference, it will probably rarely be more than a few friends and I testing, so it likely doesn't have to be very strong.
Theres basically a fixed rate for cpu time on cloud instances across mainstream providers. Just comes down to how many you need and how full they will be. Inexpensive is just a matter of being efficient with that estimation and only spinning up what you need. We call this auto scaling or dynamic auto scaling.