Prioritize WMS and EDI integration, measurable SLAs (OTD, order accuracy), inbound receiving and dock capacity, labor productivity metrics, security and bonded storage, and the provider's experience with your channel mix (eCommerce, B2B, retail replenishment). Also assess peak-season scalability and contingency plans for port or carrier disruptions.

Closer port and intermodal access reduces drayage and handling steps, lowering landed cost and transit variability. Frequent carrier schedules support consolidation and smaller lead times. Providers with strong carrier contracts can secure volume rates and priority loading, improving predictability for time-sensitive B2B and omnichannel orders.

Critical services include fast pick-and-pack workflows, reverse logistics and inspection lanes, kitting and light assembly, temperature-controlled zones, and cross-dock capability. A modern WMS with omnichannel routing rules and real-time inventory visibility is essential to minimize stockouts and accelerate returns processing.

Negotiate storage density (pallet positions vs. shelving), labor rate bands tied to productivity thresholds, volume discounts on inbound receiving and pick rates, fuel and accessorial caps, and KPI-based rebates. Seek transparent billing, avoided fees for manual exceptions, and predictable annual rate escalators tied to CPI or agreed metrics.