Master the Contest! Amp Up Your Logistics Skills with Exam 4 Practice 2026!

The main idea is to measure how well replenishment decisions translate into satisfying customer demand. Fill rate directly captures this by showing the portion of demand that can be filled from on-hand inventory at the time it’s requested. A strong fill rate means replenishment quantities and timing, along with safety stock levels, are aligned with demand patterns, reducing stockouts and backorders and delivering reliable service. You can think of it as units or orders filled immediately divided by total units or orders demanded, depending on how a company tracks it.

The other metrics don’t target this fulfillment outcome as directly. Gross margin focuses on profitability rather than whether demand was met. Carrying cost looks at the expense of holding inventory, not at service levels. Stock turn rate measures how quickly inventory cycles through the system, which reflects efficiency and velocity but not necessarily the ability to meet demand in a given time frame.