How to organize communication between develop and production server?

Question

git

Good afternoon!
There is a main server on DO (production server)
There is also a repository of the same server on BitBucket (develop server)
We work through sourceTree Tell me
how you can automate the transfer of data from develop to production server
Or How is this done in general?
Can eat what article on "equipment of a workplace"?
Advice not related to these particular servers and software is also welcome. In general, you need to do this: There is a development server, we check
all the features on it, etc.
something like

Answer 1

I use Jenkins as a CI system to pull changes from a repository, check them out, and deploy to a development or production server.
But for 1-2 sites, this is a bit cumbersome system. The best thing is if you have 10 projects or more.

Answer 2

Google:
continuous integration - as DevMan already said , for tests and project builds
continuous delivery - for deployment automation.

Answer 3

This question has been raised more than once on the toaster.
Also google for "Git + Deploy"
BitBucket is not a develop server but a repository server aka just a repository.