Prioritize measurable KPIs and clear infrastructure capabilities:

• Transit time consistency and documented SLA performance
• Storage type (pallet, racked, temperature control) and usable cube
• Material handling assets (forklifts, conveyors) and throughput metrics
• IT integration (WMS, EDI, order visibility) and onboarding timelines

Measure benefits by modeling landed-cost and service improvements: compare average parcel transit times and rates to your customer base, calculate inventory carrying versus surface freight savings, and run scenario tests for split inventory (coastal hub + inland node) to quantify reduced stockouts and faster replenishment cycles.

Confirm the 3PL's cross-border experience and carrier networks:

• Documentation support for import/export and local clearances
• Existing relationships with regional carriers and freight forwarders
• Bonded warehousing options or customs facilitation services
• Track record of handling regulatory inspections and transit holds

Look for scalable service tiers and automation readiness: flexible labor plans, surge capacity SLAs, slotting optimization, WMS features for batch picking and returns processing, and visibility tools for inventory forecasting and replenishment to handle peaks without compromising SLAs.