Prioritize inventory accuracy, order cycle time, pick/pack throughput, on-time SLA performance, and returns turnaround. Also evaluate WMS/TMS integrations, automation (conveyors, sortation), value-add services (kitting, labeling), security, and scalability for peak volumes to ensure the partner meets cost and service targets.

Proximity to customer clusters and carrier hubs reduces transit zones, zone charges, and last-mile mileage, lowering landed cost. High carrier density and intermodal access increase routing options and contract leverage, improving transit consistency and enabling faster same-day/next-day service where volume supports it.

Confirm API or EDI capabilities, real-time inventory sync, order acknowledgements, and error handling. Define test plans, data mapping, cutover windows, and KPI dashboards. Clear responsibilities for chargebacks, reconciliation, and exception workflows speed onboarding and reduce go-live disruptions.

Expect storage billed per pallet/cubic foot or slot, pick/pack per-order fees, receiving and putaway charges, and monthly minimums. Negotiate volume tiers, peak surcharges, returns handling, and accessorials (long-term storage, special handling) with clear definitions and reconciliation processes to avoid unexpected costs.