Focus on SLAs (OTIF, pick accuracy), WMS/API integration, inventory accuracy, throughput and dock appointment capacity, pricing model (storage, handling, fuel/peak surcharges), labor reliability, and minimum term flexibility. Verify reporting cadence and dispute resolution clauses to align operations with commercial targets.

Location affects parcel zone boundaries, route density, and access to regional carriers. A warehouse near major highways and carrier hubs shortens transit times, increases the opportunity for zone-skipping, and improves pickup frequency—reducing per-shipment last-mile costs and improving predictability for time-sensitive B2B deliveries.

Confirm WMS capabilities, real-time API/EDI order and inventory sync, OMS/ERP integration, returns processing workflows, and support for distributed order routing. Track KPIs such as pick/pack accuracy, inventory accuracy, cycle count frequency, orders per hour, and average fulfillment lead time.

Require scalable capacity clauses, temporary labor ramp plans, defined peak rates, multi-site inventory pooling options, cross-docking capability, and clear lead times for space and equipment increases. Ensure SLA adjustments and performance review cadences to manage peak service quality and costs.