PLAYBOOKS
Operational guidance for real planning decisions.
Formulas, assumptions, examples, limitations, and questions that carry analysis into a decision.
How to Calculate Safety Stock
Safety stock protects against uncertainty. The useful question is not only how much, but which uncertainty and service commitment justify it.
Read playbookINVENTORY PLANNINGReorder Point Explained
A reorder point is a trigger, not an order quantity. It combines expected lead-time demand with protection against uncertainty.
Read playbookDEMAND PLANNINGWMAPE vs MAPE vs Bias
No single forecast metric answers every planning question. Accuracy measures error size, bias measures direction, and Pareto shows where attention matters.
Read playbookINVENTORY PLANNINGHow Supply Planners Should Use Days of Supply
Days of supply is useful only when compared with a policy, demand pattern, and replenishment constraint. High DOS is exposure, not automatic waste.
Read playbookSUPPLY PLANNINGWhat Is Supply Planning?
Supply planning converts unconstrained demand into a feasible plan using inventory, materials, capacity, lead times, and operating constraints.
Read playbookPLANNING OPERATING MODELDemand Planning vs Supply Planning
Demand planning estimates what customers may request. Supply planning determines what the network can fulfill, when, and under which constraints.
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