when working on CloudFiles, we often had monitoring for our limited dependencies that were better than their monitoring. Don't just know what your stuff is doing, but what your whole dependency ecosystem is doing and know when it all goes south. also helps to learn where and how you can mitigate some of those dependencies.
This. We found very big, serious issues with our anti-DDOS provider because their monitoring sucked compared to ours. It was a sobering reality check when we realized that.
