What is the difference between production planning and production scheduling?

Production planning and production scheduling work at two different horizons. Production planning determines what should be produced, when production should occur, and in what quantities — based on demand forecasts, available capacity, material availability, and other Supply Chain constraints. It typically operates over weeks to months.

Production scheduling focuses on the operational execution of those plans on the shop floor. It organizes the detailed sequence of manufacturing tasks, machine assignments, changeover sequences, and production timelines, usually at a daily or even hourly granularity.

Manufacturing production planning software supports strategic planning decisions at the Supply Chain level — deciding which SKUs to run when, on which plant — while production scheduling tools focus on operational manufacturing execution. In practice, the two layers feed each other: planning sets the targets, scheduling makes them real.