Prioritize highway and intermodal access, facility layout (dock density, clear height), WMS capabilities and API connectivity, SLA guarantees, capacity for seasonal peaks, and available value-added services like kitting, returns, and temp control. Also review safety records and carrier integrations to confirm alignment with your service promises.

Transit times determine inventory placement and safety stock levels. Strong carrier access enables reliable last-mile options, offers better cost-density for zoned shipping, and supports split inventory between regional hubs. Use transit metrics to decide single vs. multi-node fulfillment and to optimize parcel vs. LTL strategies.

Compare base storage rates, pick-and-pack fees, inbound receiving charges, slotting or SKU complexity fees, value-added service costs, minimums, and accessorials. Evaluate billing cadence, chargeback practices, and any volume discounts to model landed cost and break-even points for different demand scenarios.

Conduct WMS demonstrations and API tests, request KPI and audit reports, verify insurance and certifications, check client references, and perform site visits to observe throughput and labor practices. Include pilot programs or short-term SLAs to validate performance under real order profiles before long-term commitments.