Prioritize robust WMS integrations (real-time inventory, API shipping/carrier links), dock door count and layout, racking and pallet capacity, automation options for high-velocity SKUs, and documented peak labor plans. Request references and uptime SLAs for systems and detailed cycle-count accuracy metrics.

Compare storage (per pallet/bin), receiving and putaway, pick-and-pack by pick type, outbound handling, returns processing, and software/transaction fees. Use KPIs like cost-per-order, cost-per-pallet, inventory accuracy, order cycle time, and minimum monthly guarantees to normalize proposals.

Proximity to major highways, ports, and carrier terminals reduces linehaul and last-mile costs and shortens delivery windows. Access to multiple regional carriers enables competitive rates and better consolidation; verify carrier pickup schedules, LTL lanes served, and transit-time maps tailored to your ZIP/postal destinations.

Require SLAs for on-time-in-full (OTIF), order accuracy, inventory accuracy, dock-to-stock lead times, and item fill rate. Include penalties or remediation for sustained misses, scheduled reporting cadence, audit rights, and clear escalation paths for claims and exception handling.