Evaluate pick-and-pack throughput, WMS integration and API readiness, order SLA performance, returns processing, and scalable labor models. Also review slotting strategy, kitting capability, seasonal flex capacity, and on-site quality control processes to ensure consistent customer experience.

Carrier density influences routing options, lead times, and freight rates. Consider proximity to major highways, intermodal yards, and regional TL/LTL terminals. A 3PL with strong carrier relationships can improve rate negotiation, reduce detention, and offer better capacity during peak seasons.

Key attributes include clear height, dock count, column spacing, power availability, yard depth, and available racked capacity. Also assess zoning, local labor pool, utility redundancy, and nearby supplier or customer clusters to minimize handling and transport costs.

Shifting inventory can lower fixed overhead but adds per-transaction fees; expect improved scalability and reduced capital expenditure versus potential increases in unit handling or storage fees. Monitor service KPIs (OTIF, pick accuracy) and perform periodic cost-to-serve analysis to validate savings.