Prioritize location relative to ports and intermodal hubs, facility footprint and expansion capacity, automation and WMS capabilities, carrier connectivity, workforce availability, and transparent SLA/KPI reporting. Verify peak-season scalability, security, and the provider’s experience with your channel mix (eCommerce vs B2B).

Model total landed cost: balance inventory carrying vs transportation savings, expected transit-time improvements, service-level targets, and stock-keeping unit demand patterns. Use zone-density analysis and demand forecasting to determine whether multiple sites reduce last-mile costs and meet promised delivery windows.

Define RMA turnaround, return-to-stock timelines, disposition policies, and accuracy targets. Require real-time inventory visibility via WMS/TMS APIs or EDI, exception reporting, and clear chargeback rules. Ensure the 3PL supports value-added services like inspection, refurbishment, and inventory reconciliation.

Assess proximity to carrier hubs and LTL pooling points, presence of regional couriers, parcel zone density, and options for zone skipping or multi-leg consolidation. Review negotiated carrier rates, minimums, and the 3PL’s ability to tender across multiple carriers for cost and service optimization.

Verify licenses (bonded warehouse, customs broker relationships), insurance and liability limits, audit history, cybersecurity controls, and compliance with import/export regulations. Request SOC reports, perform site visits, and confirm documented procedures for manifests, duty payments, and regulatory reporting.