Prioritize multimodal carrier access, measurable transit‑time improvements, scalable storage and labor plans, SLA‑backed pick/pack/ship KPIs, and real‑time systems (WMS/OMS with API/EDI). Also validate returns processing, cross‑dock capability, and contingency plans for peak seasons.

Model total landed cost per SKU including per‑sq‑ft rent, handling rates, average storage days, labor wages and availability, local taxes/incentives, drayage, and last‑mile delivery costs to primary customer zones. Run scenario analyses for peak volumes and returns to compare true cost‑to‑serve.

Confirm WMS functionality, inventory accuracy rates, real‑time reporting, API/EDI connectivity, barcode/RFID support, returns workflows, data security controls, and any sector‑specific compliance such as temperature control or hazmat handling. Define integration and testing timelines.

Expect strong access to regional highways, parcel and LTL carriers, and coordinated cross‑dock for expedited lanes. Evaluate carrier density, daily pickup schedules, rail or port connectivity where relevant, and the 3PL’s negotiated rate visibility to optimize transit times and freight cost.