In this lesson you will learn: One weekly metrics ritual you will actually keep. What to log when something breaks (IDs, dates, territories). Turning insights into the next release’s hypothesis.
Numbers without **decisions** are entertainment. Pair **LUCY** delivery and account signals with **first-party** artist dashboards—then write down **one** change per week (creative, targeting, or catalog) based on what moved **saves** or **completion**.
Attribution across social and streaming remains imperfect—use **blended** metrics and holdout tests when spending real money.