Putaway

Putaway is the warehouse process of moving inbound goods from the receiving dock (or staging area) to their assigned storage locations in the warehouse. It is the bridge between receiving and storage — the point at which inventory officially enters the warehouse's location-tracking system and becomes available for order fulfillment.

Why Putaway Strategy Matters

Putaway is often underestimated as an operational lever. Poor putaway decisions cascade into picking inefficiency: a fast-moving SKU stored at the far end of a warehouse costs extra travel time on every single pick for the life of that stock. Good putaway strategy — executed consistently — is one of the highest-ROI investments in warehouse design.

Directed vs. Random Putaway

Directed putaway: The WMS assigns each inbound item to a specific location based on predefined rules. Rules can consider: product dimensions and weight (can this item go on the top rack?), storage zone (does this need to go in the refrigerated area?), velocity (should this A-item go in the fast-pick zone?), and slotting optimization (items with affinity — ordered together often — should be close).

Random putaway: Items are placed wherever there is available space, and the location is recorded. WMS-enabled random putaway is efficient space utilization but requires a robust WMS to know where every item is. Amazon's fulfillment centers famously use stochastic (random) putaway — a Harry Potter book might be stored next to a kitchen utensil and a piece of hardware. The WMS knows exactly where every unit is; humans would not be able to find anything without WMS direction.

Fixed location putaway: Each SKU has one dedicated location. Simple and worker-friendly but space-inefficient — locations sit empty when the SKU is out of stock.

Putaway Best Practices

Velocity-based slotting: Fast-moving SKUs (your top 20% by picks) belong in the "golden zone" — between waist and shoulder height, close to packing stations, minimizing reach and travel. Slow movers can go in hard-to-reach locations.

Product affinity slotting: Analyze which SKUs are frequently ordered together and store them in adjacent bins. The warehouse path from SKU A to SKU B takes 45 seconds; if those two SKUs are ordered together 300 times per day, you save 3.75 hours of labor daily by co-locating them.

Weight considerations: Heavy items should be stored at floor level or low rack positions — both for ergonomic safety and to reduce damage from dropping.

Reserve vs. forward pick: Many operations use a two-zone model: bulk reserve storage for overstock, and forward pick locations near packing stations with limited quantities of fast-movers. Replenishment tasks move goods from reserve to forward as forward locations are depleted.

Putaway in Cross-Dock Operations

In cross-docking, putaway is eliminated: inbound goods are directed from the receiving dock straight to outbound staging, bypassing storage entirely. Cross-docking is only possible when inbound supply and outbound orders are well-synchronized and when the product doesn't need to be stored between arrival and shipment.