How do I host a node server with a hosting service?

So for the past little while I have been working on a web project. It is a node express server. I have built the front and back end from the ground up and I am reaching a point where I would like to publish. I have purchased a domain, but at this point I am trying to figure out the best way (how) to host my server. How should I deal with licensing? which hosting service should I use? I am generally confused, and am having trouble finding a clear way to get my web service online. Thanks

via Christopher Evans