Inventory is “frozen cash,” and managing it shouldn’t be based on a gut feeling. Whether you’re dealing with lead time swings or safety stock buffers, this data-driven guide provides the formulas needed to stay in the “Goldilocks Zone.” Learn how a domestic 3PL partner changes the math by reducing replenishment times from months to days. By drip-feeding Amazon FBA from a local 3PL, you keep your IPI scores high and your storage fees low. Stop the inventory roller coaster and start right-sizing your stock to unlock capital for ads and growth.