Focus on measurable operational metrics and integration capabilities. Key items include:

• WMS and API/EDI compatibility for real-time inventory and order flow
• Turnaround times, pick accuracy, and SLA penalties
• Returns processing speed, reverse-logistics workflows, and cost-per-return

Location economics affect transportation, labor, and real estate components of per-order cost. Proximity to carriers and intermodal nodes reduces transit spend and transit days, while competitive lease rates and labor availability lower fixed overhead, improving cost-per-order especially for distributed, high-SKU assortments.

Require certified integrations and transparent SLAs. Priorities include:

• Bi-directional API/EDI for orders, inventory, and tracking
• Role-based dashboards and reporting for KPI visibility
• Defined SLA metrics for OTIF, pick accuracy, and replenishment timing

Evaluate written continuity plans, redundancy, and compliance. Check for multiple carrier options, alternate facility capacity, insurance limits, documented disaster recovery, and historical performance during peak events. Review audits, certifications, and contract clauses for force majeure and service remediation.