Prioritize SLA performance, slotting and storage density, inbound cross-dock capability, returns processing, and integration with your OMS/WMS. Assess pick accuracy, peak capacity, labor model flexibility, and the 3PL’s carrier contracts to ensure predictable lead times and cost-to-serve.

Regional highway access and frequent regional line-haul services reduce line-haul costs and transit times. Selecting a 3PL with established carrier relationships and consolidated distribution lanes in the area improves delivery windows and gives you leverage for negotiated rates.

Model occupancy (rent and racking), labor and handling rates, inbound receiving and putaway, picking accuracy and returns handling, shrinkage, and transport lane costs. Include seasonal peak labor premiums and technology integration fees to complete a true cost-to-serve analysis.

Look for WMS with API-first integrations to your OMS and eCommerce platforms, real-time inventory visibility, barcode/RFID support, rule-based picking, and capacity for automation or sortation. These capabilities reduce errors and speed up order-to-shipment cycles.