Prioritize measurable capabilities: inbound/outbound dock capacity and cross-dock throughput; racking density and storage types; WMS functionality and API readiness for real-time inventory; labor scalability and peak-season plans; and value-added service availability (kitting, returns). Compare SLAs for order accuracy and lead times to quantify cost-to-serve.

Carrier access in the region affects lane density, freight rates, and transit time variability. Proximity to major highways and terminals supports multiple truck carriers and regional rail options, enabling route optimization and competitive bidding. Better connectivity reduces dwell and improves predictability for time-sensitive B2B and omnichannel deliveries.

Require a 3PL with robust WMS, API endpoints for orders and inventory, EDI or modern API support for carrier and marketplace integrations, and clear data governance for SKUs and lot/serial tracking. Validate test cycles, daily reconciliation procedures, and exception reporting to avoid fulfillment disruption during onboarding.

Key cost drivers include storage pricing (per pallet or cubic meter), pick-and-pack transaction fees, inbound receiving and put-away charges, labor surcharges for peaks, and value-added service rates. Also review minimums, notice periods for rate changes, carrier access fees, and liability/insurance terms that influence total landed cost.