The basics, also for managers.
“Dashboards provide numbers, but numbers alone do not explain the system. Averages, CPU, and throughput plots are misleading if you do not know the math behind them. At One2N, our SRE practice has seen this many times. What separates a reactive engineer from a confident SRE is not more dashboards but the ability to interpret them correctly.”
https://one2n.io/blog/sre-math-every-engineer-should-know-a-practical-guide