Every important metric needs a business owner. The data team can calculate it, but the business has to defend it.
Ownership is not the person who built the dashboard. It is the person or function accountable for what the metric means in decisions. If "active customer" drives expansion planning, someone has to own the threshold, exclusions, lookback window, and edge cases. If "gross retention" shapes executive narrative, finance or revenue leadership has to stand behind the definition.
Without ownership, metrics become communal property in the worst way. Anyone can request a tweak. Nobody is responsible for the consequences. One team excludes trials, another includes them, a board deck rounds the number differently, and the company burns a review explaining why all three versions are "technically correct."
A useful semantic layer makes ownership visible. Each metric should have a definition owner, calculation steward, source system, refresh cadence, change log, and list of approved uses. That may sound heavy. It is lighter than discovering during planning that nobody agrees on the denominator.
Owners should not freeze metrics forever. Definitions need to change when the business changes. The point is to make changes deliberate. If the company moves upmarket, rewrites packaging, or changes territory rules, the metric owner decides how the definition changes and communicates the break in comparability.
The operating question is blunt: who is allowed to say, "this is the definition we will use"? If the answer is unclear, the metric is not governed. It is just a number with social momentum.
This is part 4 of 10 in The Semantic Layer.
