We keep the first scope tight, often two or three critical data areas such as customers and revenue. Once owners are confident and routines run, we expand. You decide at the end of each phase whether to continue.
Every phase is priced separately, so you never commit to the whole program up front. Discovery is advisory and serves as the readiness check: we propose remediation only when owners are in place and ready to act. If they are not, we train them first, or say plainly that the program is premature.
Here is what that looks like in practice. In the first phase, you learn which data problems cost the most. By the second, owners are named and the rules are written. By the third, the worst issues are fixed at their source. From the fourth on, governance runs as a monthly routine with a scorecard.
Each phase also has a clear exit test. Discovery ends when leaders agree the priorities. Design ends when the charter is signed. Remediation ends when the scorecard shows the target quality. Operation is working when owners run the monthly meeting without us. This keeps the roadmap honest and the budget under control.
You can pause between phases without losing what has been built.
Gains are measured against the baseline after each phase.