Prioritize measurable SLAs and operational KPIs: order accuracy, pick‑to‑ship lead time, on‑time dispatch, and chargeback policies. Validate dock doors, throughput (orders/hour), seasonal surge handling, returns processing, and EDI/API integration to ensure the provider matches projected volumes and peak profiles.

Assess road quality and proximity to major freight corridors, port feeder schedules, and availability of LTL/FTL services. Check on‑site cross‑dock capacity, pallet handling equipment, container strip/strip‑and‑store capability, and established carrier contracts for predictable lead times.

Compare tariff structures (storage per pallet/unit, handling, pick fees), review flex capacity for seasonality, and model inventory days vs. carrying cost. Look for slotting optimization, multi‑temperature options, and surge labor plans to contain marginal costs during peaks.

Require robust WMS with real‑time inventory APIs or EDI, order lifecycle visibility, and scalable reporting. Confirm ability to support SKU attributes, batch/lot tracking, and automated exceptions. Define onboarding timelines, data mapping, and escalation SLAs to minimize go‑live friction.