Prioritize throughput (orders/hour), pick accuracy, on-time shipment rate, and slotting efficiency. Verify WMS/APIs for inventory visibility, peak labor scalability, reverse logistics capacity, and SLA penalties. Confirm cross-dock throughput and available dock doors to avoid bottlenecks during promotions.

A Scottsdale-based 3PL shortens ground lanes to western and southwestern hubs, reducing regional transit days and potential freight spend. Closer intermodal and airport access can lower expedited shipment costs and improve delivery predictability for time-sensitive SKUs.

Require a modern WMS with API connectivity, configurable pick-and-pack workflows, inventory segmentation, returns processing workflows, and real-time reporting. Check for automation options, secure storage for high-value SKUs, and processes for B2B pallet handling plus eCommerce parcel fulfillment.

Model cost-to-serve by SKU class, including storage, pick labor, packing materials, and outbound freight. Request tiered rate structures for volume breaks, defined peak rates, and clear chargebacks. Validate labor productivity assumptions and capacity commitments to ensure scalable operating margins.