In the old world before cloud and continuous delivery you used to set stuff up once and then leave it alone until the monitoring system notified you of a problem.
Recently I've been documenting our API's using Slate which is a static site generator. It turns markdown text into pretty html. We've had customers using our API's for a while but the docs were hosted on a Github wiki page and weren't very friendly or nice to look at. Since making the docs better we've had more people build things!