Assess WMS/OMS integrations, real-time inventory visibility, SLA commitments (pick accuracy, order cut-off, lead times), returns and reverse-logistics processes, and the 3PL’s capacity for seasonal peaks. Confirm EDI/API capabilities and sample onboarding/testing timelines before contracting.

Prioritize road connectivity to national trunk routes, frequency of regional carrier services, access to consolidation networks for long-haul lanes, and any available rail or multimodal terminals. Validate cross-border forwarding experience and typical transit times to target markets.

Main cost drivers include lease rates, labor and handling charges, storage density, value-added services (kitting, labeling), and transport fuel surcharges. Optimize by improving stock turns, using shared-space models, negotiating service bundles, and aligning SLA tiers with SKU velocity.

Confirm that the 3PL provides customs brokerage or strong partnerships, bonded storage if required, accurate HS/tariff classification support, export documentation handling, and established procedures for inspections and duties. Ask for documented workflows and past examples of cross-border shipments.