DevOps is a stew
When learning a new recipe, especially when dabbling in cuisine from different cultures, I find it really important to make sure one is really precise in their understanding the words used in the recipe. I've had a few unfortunate misunderstandings that resulted in... gastronomic disaster.
Similarly, I find that I can't responsibly use the word "DevOps" without testing that the person I'm talking to know which meaning I'm using. Here's some examples of what someone may think I mean when I say "DevOps":