Prioritize location relative to customer clusters and carriers, service-level options (pick-pack, kitting, returns), throughput capacity, automation level, and measurable KPIs (OTD, perfect order rate, inventory accuracy). Also review contractual SLAs, onboarding timelines, and IT integration capability for inventory and order management.

Model landed-cost scenarios comparing carrier rates, zone-based parcel pricing, average transit days, and inventory carrying costs. Include warehouse operating costs (rent, labor), cross-dock opportunities, and potential reductions in expedited shipping. Run sample SKU flows to quantify delivery-window improvements and total cost-to-serve.

Require API or EDI integrations for OMS/WMS synchronization, real-time inventory visibility, event-based notifications, and rate-shopping connectivity. Ensure WMS supports lot/serial control, batch picking, and returns processing. Ask providers for reporting cadence, exception workflows, and onboarding support.

Validate insurance, liability limits, security protocols, and contingency plans for labor disruptions or natural events. Review audit reports, safety certifications, and customs/bonded handling capabilities for import/export. Confirm compliance with product-specific regulations and data-security practices for customer data.