A business decision system with an evidence report. Choose one guide and follow the delivery plan. Publish the decision brief, data contract, model comparison, policy comparison, experiment protocol, batch/API contract, monitoring and rollback artifacts. For private business data, publish code and synthetic examples instead of customer records.
Keep three evidence levels separate in the report:
| Evidence | What you may claim |
|---|---|
| Synthetic simulator with known effects | The pipeline and policy work under the simulator's assumptions |
| Retrospective public or business data | Predictive performance on that held-out population; causal effects only when the design supports identification |
| Valid randomised policy experiment | An estimated effect of that policy in the tested population, period and operating conditions |
A finished prototype can have an experiment proposal and a rehearsed rollout. A measured live profit lift needs executed assignments and observed outcomes. Say this plainly.