Focus on transit time variability, OTIF (on‑time in full), order cycle time, inventory accuracy, and cost per order. Also evaluate average dock-to-stock lead times, chargeback frequency, and SLA remedies. Request historical performance data and sample operational reports to validate carrier lanes and seasonal capacity handling.

Prioritize distance to ports and air cargo hubs, proximity to intermodal terminals and major highways, and the density of regional carrier routes. Check terminal operating hours, rail access, bonded facility availability, and carrier contracts that support your outbound lanes and lead‑time targets.

Compare a total cost of ownership model that includes inbound transport, duties, storage per cubic meter, pick‑and‑pack, kitting, returns handling, fulfillment SLA penalties, and variable surcharges. Request sample invoices and run a per‑SKU, per‑order cost model under realistic volume scenarios to surface true cost drivers.

Require a modern WMS with real‑time inventory visibility, API/EDI integrations for order flow, automated pick/pack support, batch and lot tracking, and returns management. Demand performance dashboards, configurable SLAs, and demonstrated experience with omnichannel routing and value‑add services like kitting and replenishment.