Prioritize measurable KPIs: average transit times to core markets, order‑to‑delivery SLA, pick accuracy, and cut‑off times. Verify WMS/API integration, carrier diversity, slotting and batching capabilities, and true landed‑cost modeling (including inbound consolidation and last‑mile rates) to compare providers objectively.

Focus on bonded storage, customs brokerage support, pallet racking density, dock door count, forklift and staging capacity, and certifications for safety and security. Ensure the provider can handle ASN workflows, palletized inbound receipts, and vendor compliance programs common in B2B networks.

Assess reverse logistics workflows (RMA processing, inspection, refurbishment), kitting and assembly throughput, and proximity to urban last‑mile hubs. Review SLA guarantees for same‑day/next‑day fulfillment, system support for multi‑channel order routing, and scalable labor for promotional peaks.

Primary drivers include storage per pallet, throughput pricing (picks/lines), inbound handling, DIM weight charges, and carrier rates. Optimize by improving inventory turns, consolidating inbound shipments, negotiating pooled carrier lanes, and choosing a service model (dedicated vs shared) aligned to volume patterns.