Require WMS with real-time inventory, multi-SKU pick-and-pack workflows, batch and single-order picking, kitting, multi-temperature storage if needed, returns processing and established carrier APIs. Also evaluate labor scalability, onboarding support and ability to handle promotional or seasonal spikes without compromising SLA performance.

Location affects highway access, consolidation opportunities and proximity to parcel hubs. A facility near primary trunk roads shortens last-mile radii, increases carrier options and reduces LTL costs. Centralized placement reduces multi-stop miles and supports predictable transit windows for both domestic drops and nearby cross-border lanes.

Compare storage density and rates, per-pallet and per-sku storage fees, inbound receiving, pick-and-pack labor pricing, box and materials charges, minimums, tech/WMS fees and seasonal surcharges. Also evaluate value-add charges (kitting, labeling), chargeback policies and how costs scale with order mix and SKUs to model true cost-per-order.

Typical SLAs include order accuracy, OTIF (on-time in-full), inventory accuracy, lead times for receiving and putaway, and damage rates. Technical requirements cover EDI/API WMS integration, ASNs, standard barcoding, cycle-count cadence and a pilot period for volume ramp. Define remediation steps and penalties in the SLA for measurable accountability.