What does it mean that workflow measurement?

You cannot improve a workflow you do not measure. Track cycle time, throughput, error rate, and energy cost — but track them lightly, because invasive measurement distorts the very process you are trying to understand.

Example: You have a weekly reporting workflow that feels slow. You guess it takes about two hours. You start timing it — actually recording start and stop — and discover it takes three hours and forty minutes. Worse, you discover that ninety minutes of that time is spent hunting for data that should be pre-aggregated. Without measurement, you'd keep guessing the workflow was 'about two hours' and keep losing ninety minutes to a fixable bottleneck every single week.

Try this: Pick one workflow you execute at least weekly. For the next three executions, record four numbers: (1) cycle time — wall-clock minutes from start to finish, (2) touch time — minutes you were actively working versus waiting, (3) error count — how many times you had to redo, correct, or recover from a mistake, and (4) energy rating — 1 to 5, how depleted you feel afterward. Do not try to improve anything yet. Just measure. After three data points, look at the variance. The story will be in what fluctuates and what stays constant.