Prioritize throughput capacity, SKU storage configuration, pick-and-pack accuracy, SLA for cut-off and same-day processing, and integrations with your OMS/WMS. Also evaluate inbound consolidation, cross-dock ability, and the 3PL’s carrier relationships to minimize lead times and parcel costs.

Evaluate average transit times to major customer clusters, parcel zone distribution, available carrier contracted rates, and the 3PL’s ability to optimize parcel batching. Lower regional transport costs and reduced transit zones directly improve unit economics for both eCommerce and B2B shipments.

Confirm racked storage, dock capacity, secure receiving, inventory cycle-count procedures, and any temperature-controlled options if required. Request documentation on safety certifications, insurance, and audit trails for traceability and regulatory compliance.

Include KPIs for inventory accuracy, order lead time, on-time shipment rate, pick-and-pack error rate, and chargeback terms for misses. Define clear SLA penalties/cures, reporting cadence, dispute resolution, and scalability clauses to accommodate peak seasons and SKU growth.