Evaluate WMS integration, SKU handling speed, inventory accuracy, pick-and-pack configurations for B2C and B2B, reverse logistics processes, and SLA-driven reporting. Also assess dock capacity, staging areas, and value-added services like kitting and labeling to support omnichannel demand profiles.

Request transit-time maps, carrier lane coverage, weekly frequency for TL/LTL, and proof of contracted carrier rates. Review historical on-time delivery KPIs, lead-time variability by destination, and the 3PL’s cross-dock and consolidation capabilities that reduce landed cost and improve service windows.

Key drivers include storage density (rack vs. floor), labor productivity, handling complexity (per-line vs. per-order), inbound/outbound throughput, and value-added services. Benchmark by $/pallet/month, $/order, and pick-cost metrics; request activity-based cost models to compare total cost-to-serve across providers.

Confirm validated temperature-controlled zones, continuous temperature monitoring, documented SOPs for temperature excursions, staff training records, and traceability systems. Verify certifications, backup power/redundancy, and audit history to ensure compliance and product integrity.