Prioritize carrier connectivity, road access, available racked and climate‑controlled space, WMS/API capabilities, and scale flexibility. Also evaluate lead times for inbound cross‑border flows, customs handling experience, SLA guarantees, and labor skill availability to ensure omnichannel order accuracy and on‑time delivery.

Moving to a regional hub can reduce last‑mile transit times to nearby markets and lower facility and labor costs, but may increase long‑haul feeder costs depending on carrier networks. Model total landed cost: storage, pick/pack labor, linehaul, and cross‑dock fees to determine net savings.

Confirm the 3PL's customs brokerage experience, bonded storage options, documentation processes, and track record with inspections. Validate HS code handling, duties management, and contingency plans for border delays to avoid inventory and cash‑flow disruptions.

Look for cloud WMS with real‑time inventory visibility, API connectivity for storefronts and carriers, support for batch/pick‑and‑pack workflows, barcode/RFID scanning, and reporting tools for cost-to-serve analytics to drive continuous improvements.

Request transparent line‑item pricing for storage, pick/pack, inbound receiving, returns processing, and value‑added services. Negotiate SLAs with penalties or credits, volume tiers, review clauses for seasonality, and clear terms for inventory ownership and insurance to control risk and predict costs.