Prioritize throughput (orders per hour), dock doors per bay, inventory accuracy, and average order cycle time. Validate WMS/API integration, SLA for pick‑pack accuracy, cold‑chain uptime if applicable, and carrier connectivity for TL/LTL and parcel. Also assess bonded space and customs brokerage if you run cross‑border flows.

Close proximity to international bridges reduces drayage and in‑transit time to US destinations, lowers inventory-in-transit days and can reduce landed cost by shortening lanes. It also enables faster return logistics and same‑day/next‑day cross‑border options when supported by efficient customs brokerage and pre‑clearance processes.

Confirm the 3PL provides licensed bonded storage, experienced customs agents, and documented procedures for temporary imports, re‑exports and maquiladora flows. Key checks: authorized economic operator status, electronic manifest capabilities, bonded inventory controls, and proven clearance times for major lanes.

Look for flexible capacity options: short‑term storage, cross‑dock programs, surge labor pools and scalable slotting. Verify transparent pricing for pick/pack tiers, access to TL/LTL pooling, and rapid onboarding timelines. A strong WMS and carrier partnerships help maintain SLAs and manage cost‑per‑order during peaks.