Prioritize warehouse footprint and scalability, inbound/outbound carrier access, lead times to key customer zones, WMS functionality, SKU handling capabilities, SLA commitments (order accuracy, ship times), labor model flexibility, and value-added services such as kitting, labeling and returns processing.

Use a cost-to-serve model that includes storage, pick-and-pack, inbound/outbound freight, packaging, and handling. Request sample rate cards, transit-time reports, and carrier lane maps; evaluate zone-skipping options and consolidation opportunities to understand true landed cost for each fulfillment channel.

Look for a WMS with API and EDI connectivity, real-time inventory sync, order management integration, barcode and scanning support, exception routing, and reporting dashboards. A robust tech stack reduces manual errors and accelerates order-to-ship timelines.

Require clear SLAs for order accuracy, on-time shipping, dock-to-stock and returns turnaround. Confirm KPI cadence and transparency—daily/weekly dashboards, chargeback policies, audit rights, and escalation paths—to ensure operational alignment and measurable improvement.

Address insurance and liability limits, security and access controls, contingency plans for labor or transport disruptions, data protection, dispute resolution, and termination terms. If cross-border movement applies, include customs facilitation and regulatory compliance clauses.