Require clear KPIs: order accuracy, on‑time shipment rate, inventory accuracy, dock‑to‑stock lead time, average pick rate, return processing time, and chargeback incidence. Include measurement cadence and reporting format in the SLA so you can benchmark monthly performance and trigger remediation.

Location drives last‑mile distance to customers, access to major highways and LTL/parcel terminals, and available carrier lanes. A site nearer to regional demand centers reduces transit time and shipping zones; proximity to intermodal yards or terminals increases carrier choice and consolidation opportunities, lowering per‑unit freight cost.

Verify native or API‑based integrations with your OMS/ERP, real‑time inventory visibility, barcode/WMS scanning, EDI for carrier and retail partners, and support for webhooks or SFTP. Look for configurable business rules for allocation, split shipments, and returns automation to preserve CX across channels.

Negotiate transparent rate cards: storage (per pallet/unit), pick/pack, receiving, kitting, and accessorials. Define volume tiers, minimums, SLA credits for service failures, seasonality adjustments, notice periods, and exit terms. Include provisions for peak labor, slotting optimization, and performance‑linked pricing to align cost with throughput.