The S&OP Maturity Model: How to Assess Your Current Level and Choose the Next Step
In discussions of S&OP and IBP, a common error is organizations trying to jump straight to the most complete form of the process. The result is usually a heavy structure nobody uses. A maturity model instead defines a gradual path and helps each organization see where it is now and which realistic next step to take.
A simple five-level model can be described as follows. At level one, planning is scattered and reactive: each unit has its own plan and coordination is informal. At level two, a periodic meeting exists but it is mostly reporting. At level three, a monthly cycle runs with written decisions and clear owners. At level four, the operational plan is tied to finance and strategy. At level five, scenario planning and strategic decisions are part of the cycle (IBP).
To identify the level, look at behavioral signs, not claims. Is the demand forecast one agreed number, or does each unit have its own? Does the S&OP meeting produce written decisions with owners? Are capacity and supply constraints visible in the plan? Is the output compared with the financial budget? Each 'no' marks a level you have not yet reached.
A simple test: look at the last three meetings and count how many written decisions with an owner and deadline were made. If it is near zero, the process is effectively at level two (reporting) even if meetings are regular. This test is more direct than any questionnaire.
The key rule is to climb one level from where you are, not two or three. An organization whose meeting is still limited to reporting gains nothing by adding strategic scenario planning; it must first establish decision ownership and an agreed forecast. Each level builds on the previous one, and skipping creates a fragile process.
Choose the next step by the biggest gap. If each unit forecasts separately, the priority is a consensus forecast. If decisions are not written down, start with a decision-and-follow-up template. If the plan is not checked against capacity, add that to the cycle. The 90-day rollout we described in another article is a suitable format for one step.
A common mistake is using the maturity model as a ranking to show management. The aim is diagnosis, not score. An organization at level three with real decisions is better than one at level four with ceremonial meetings. Use the model to choose the next action and reassess every six to twelve months.
A practical starting point: answer five questions honestly today — an agreed forecast? written decisions? a named owner? capacity constraints? a link to finance? — and choose the first 'no' as your next step.