Focus on order-to-ship cycle, pick-and-pack accuracy, dock-to-stock time, average transit times to key urban centers, on-time-in-full (OTIF) rates, and carrier coverage across lanes. Require historical KPIs and sample reports to validate SLA performance during peak and off-peak periods.

Prioritize clear height and racking density, dedicated receiving and staging areas, cross-dock capability, returns processing, integrated WMS with API connectivity, and real-time inventory visibility. Confirm power, security, and contingency plans for continuity.

Compare fixed versus variable fees, storage density and pallet or cubic rates, inbound receiving charges, pick/pack and fulfillment fees, kitting or value-add costs, minimums, labor surcharges, and fuel or accessorials. Model total landed cost per order across volume scenarios.

Verify the 3PL's carrier network for regional lanes, customs brokerage capabilities, transit-time commitments to ports and border crossings, insurance and cargo acceptance rules, required permits for cross-border freight, and experience handling documentation for exports and imports.