Prioritize transit times to key hubs, WMS functionality, API/EDI integrations, SLA definitions (order-to-ship, accuracy), capacity flexibility, and cost-to-serve transparency. Also assess cross-dock capabilities, bonded storage options, and carrier partnerships to manage cross-border flows.

Carrier diversity and reliable road links reduce lead times and cost per shipment. Choose locations with direct access to national highways and documented carrier schedules to minimize transloading, support predictable ETAs, and simplify cross-border customs routing.

Include fixed rent and minimums, pick-and-pack labor, inbound receiving and putaway, storage by cubic meter or pallet, handling for returns, cross-dock fees, fuel surcharges, customs brokerage, and SLA penalties. Model cost-per-order at expected and peak volumes.

Require real-time inventory visibility (WMS), order status APIs, pick/pack accuracy guarantees, on-time dispatch rates, cut-off times, and reporting cadence. Integration points should include marketplace APIs, ERP connectors, and EDI for B2B trading partners.

Use 3PLs that offer flexible storage tiers, temporary surge labor, and variable-rate pick-and-pack pricing. Consider shared-space or multi-tenant facilities, short-term expandable racking, and contract clauses for rapid capacity increases to control fixed costs.