Prioritize demonstrated inventory accuracy, scalable racked capacity, cross-dock throughput, cold-chain controls if needed, and measurable SLAs for pick/pack and shipping. Confirm multimodal carrier relationships and visibility tools (WMS/real-time tracking) to reduce exceptions and improve fulfillment predictability.

Closer proximity to the Pan-American routes and efficient road connections to Pacific ports reduce overland mileage, fuel and driver time, lowering landed cost and transit variability. Shorter transit windows also improve appointment reliability for retail and expedite export cycles.

Look for dedicated returns processing, zoned pick areas for eCommerce vs wholesale, scalable labor pools, integrated WMS that supports order orchestration, and staging areas for fast cross-dock flows. Also verify reverse-logistics SLAs and disposition workflows for returns handling.

Confirm bonded status, customs brokerage experience, and documented import/export procedures. Verify 3PL compliance with customs manifesting, duty deferral options, and secure record-keeping to prevent clearance delays and unexpected duties. Consider carriers with established export lanes.

Request standard rate cards and a normalized cost model (storage $/pallet, pick/pack $/order, inbound/outbound handling). Compare SLA metrics (OTD, order accuracy), technology integrations, and value-added fees. Use sample SKU flows to run TCO scenarios and sensitivity analyses on volume and seasonality.