Docker revolutionized our server deployment. My company has 50 nodejs services deployed on VPS providers around the world. It allows us to completely automate

Docker revolutionized our server deployment. My company has 50 nodejs services deployed on VPS providers around the world. It allows us to completely automate the deployment of these servers regardless of the provider's APIs. When we roll out updates, we never patch a running box, we just bring the new container up and remove the old one. Super easy, super reliable, and best of all, totally scriptable. We also have a pretty sophisticated testing environment using Docker which creates a simulation of our server in on any developer's laptop. It's really remarkable actually.