Every team has their own version of the same number

Different teams apply different filters, time grains, calculation logic and currency conversions to the same business concept. Finance excludes cancelled bonuses. CRM includes them. Trading measures margin on settled bets. The BI team counts voided bets differently. Each version is internally consistent. Collectively, they are noise.

We build a governed semantic layer where every KPI is defined once — with the exact calculation logic, the filters applied, the time grain, the currency handling and the edge cases documented. That definition is what every dashboard, report, alert and model uses. When the definition needs to change, it changes in one place with a version history.