| Workstream | Accountable role | Contact or input required | Deliverable |
|---|---|---|---|
| Business task | Product owner | Operations/customer-support owner | Metric dictionary and failure-cost register |
| Evaluation | AI/ML lead | Domain reviewer independent of training | Split manifest, rubric and locked test procedure |
| Data | Data owner | Customer-contract owner and security | Inventory, provenance and permitted-use decision |
| Adaptation | ML engineer | Platform maintainer or managed service | Versioned run configuration and artefacts |
| Serving | Platform lead | Cloud/inference provider | Load test, rollback and monitoring plan |
| Commercial/legal | Finance and counsel | Procurement and contracting entity | Cost model, rights schedule and acceptance terms |
One person may cover several roles in a small team, but no responsibility should disappear. Keep the final acceptance decision on the buyer’s side.