Established model
Sales and operations planning
Developed from Oliver Wight’s work · 1980s
Also known as S&OP
One monthly cycle in which sales, operations and finance agree a single set of numbers for the months ahead.
Its place in the frameworkTime Core›Year Wheel
What it does
Demand is reviewed, supply is reviewed, the gap between them is resolved, and leadership signs off on one plan rather than the three that departments would otherwise run on. The discipline is the cadence: the same meeting, the same horizon, every month, so disagreements are settled on a schedule instead of during a crisis.
- Reach for it when
- As the backbone of a year wheel, and wherever sales forecasts and production plans are visibly different documents.
- Where it stops
- It needs honest forecasts, and the meeting is only as good as the willingness to say a number is wrong. Where it becomes a reporting ritual, it consumes a day a month and settles nothing.
Developed from Oliver Wight’s work on manufacturing planning in the 1980s; now standard practice in operations management.
Why it sits at Year Wheel
The organisation’s year as it actually repeats: the cycle it runs on, the dates it cannot move, how the load falls across it, and the rhythm in which it looks at itself.
A model is only useful when you reach for it at the right moment. This one answers a question that arises here — so it is filed here, and nowhere else. These are the working areas it serves:
- The cycleOperating-rhythm practice, and seasonality analysis applied to the organisation’s own calendar rather than to the market’s.
- Fixed pointsCalendar-constraint planning and the distinction between hard and negotiable dates.
- Load across the yearCapacity planning applied to the annual horizon, including the effect of leave and reporting periods on available effort.
- The review rhythmManagement-control literature on operating cadence as the mechanism that turns a planning framework into a practice.
What it touches elsewhere
Nothing in a business is decided on its own. A conclusion reached with this model at Year Wheel lands in these other cores, whether or not anyone follows it there.
- Project managementProject dates have to be set against the year’s real capacity rather than against the calendar.
- Market CoreThe content calendar and the seasonal moments sit inside this wheel and compete with everything else in it.
- Business CoreFinancial close, budgeting and reporting are fixed points that consume more capacity than anyone plans for.
- Goal CoreGoal review rhythm is one of the cadences the wheel has to hold, and it is the one most often displaced.
Filed at the same place
These answer questions that arise at Year Wheel too. Where they disagree with this one, the disagreement is the useful part.
- Beyond budgetingReplace the fixed annual budget with rolling forecasts and targets set against actual conditions.
Elsewhere in Time Core
These are other people’s models, named here so you can go to the source and use them properly. The Omnigoal is not affiliated with their authors and is not endorsed by them; nothing of theirs is reproduced here — no canvas, no diagram, no wording. Each is described in our own words, with the originator credited, because the framework is a place to put thinking, not a replacement for the people who did it. Model names and trademarks belong to their respective owners and are used here only to refer to the work itself.
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