Prioritize measurable SLAs (OTD, order accuracy), WMS and API integration, dock and storage configuration that fits your SKU profile, capacity for seasonal scaling, and proven processes for returns and value‑added services. Also evaluate local labor skill levels and contingency plans for peak periods.

Request historical transit‑time data to your primary markets, review proximity to highways and rail terminals, and analyze carrier density and pool distribution schedules. Compare transit variability and freight lane rates to quantify landed cost and service tradeoffs.

Include fixed rent/slotting fees, variable pick/pack and handling charges, inbound receiving and cross‑dock costs, storage density impact, and value‑added service fees. Model transport rates, dwell time penalties, and inventory carrying costs to calculate true cost‑to‑serve per channel.

Look for documented surge staffing plans, temporary storage options, flexible throughput SLAs, automation that increases pick rates, cross‑dock capability, and robust WMS rules for channel prioritization. Verify references for seasonal performance and continuity procedures.