Source: https://www.w3.org/Provider/Style/URI

This is a classic, and is worth remembering. I referred to it in one of my Monday Morning Thoughts posts (a cloud native smell) and, while some of what is referenced feels quite dated now, a lot of the thinking is still very valid, even in this age of a more centralised management of web resources (by cloud companies). In fact, I guess the web administrators of those cloud companies need to pay attention. Note that there's a difference between permanent resources (such as those referred to in this article) and ephemeral ones which are often used in cloud computing contexts.