Prioritize measurable KPIs: order accuracy, on‑time dispatch, and average lead time. Evaluate WMS/APIs for real‑time inventory sync, slotting and throughput capacity for seasonal peaks, inbound receiving SLAs, and contingency plans for disruptions. Check value‑added capabilities (kitting, returns processing) and references for similar SKU profiles.

Use 3PLs that provide bonded or export consolidation services, real‑time shipment visibility, and established carrier agreements for air and sea freight. Ensure the provider supports export documentation, customs facilitation, and multimodal handoffs to reduce dwell time and optimize landed cost for cross‑border lanes.

Negotiate storage pricing tiers, pick/pack and receiving fees, minimum volume commitments, seasonal rate adjustments, and chargebacks for exceptions. Define SLA metrics with financial remedies, lead times for scaling space, billing transparency, and clear termination and transition provisions to protect inventory continuity.