Prioritize WMS compatibility and API integration, SLA guarantees for order cycle time, capacity for cold or secure storage, dock and cross‑dock throughput, and demonstrated carrier relationships. Also assess peak‑season scalability and real‑time reporting for inventory and order status.

Road access determines last‑mile reliability while nearby airport consolidation reduces transit time for higher‑value or time‑sensitive shipments. Seasonal road conditions can impact costs and service windows, so model lead‑time variability and carrier alternatives into distribution plans.

Look for temperature‑controlled zones with monitored HVAC, segregated secure areas, traceability via lot and batch tracking, insurance coverage, and documented handling SOPs. Certifications, temperature logs, and audit history are critical to validate compliance.

Compare storage fees (per pallet/CBM), pick‑and‑pack rates, inbound receiving charges, kitting or value‑add fees, and freight passthroughs. Track KPIs such as OTIF, order accuracy, average dwell time, and cost per shipped order to normalize vendor performance.