Key metrics include port and highway proximity, dock door and trailer capacity, ramp and cross-dock capability, WMS/EDI/API integrations, on-site customs/bonded status, and cold storage availability. Review SLA performance data (dock-to-stock, order cycle time) and carrier mix to validate network resiliency.

Confirm pick-and-pack accuracy, batch and zone picking, returns management, SKU velocity-based slotting, kitting/assembly, and support for multiple sales channels. Ensure the 3PL offers real-time inventory visibility, API order routing, and reporting to meet channel-specific SLAs and seasonal volume swings.

Common cost drivers: storage per pallet/ft², receiving and handling fees, pick/pack per-line costs, dimensional shipping charges, and minimums. Pricing models vary (a la carte vs. bundled). Optimize by rightsizing inventory, consolidating SKUs, negotiating throughput discounts, and leveraging zone-skipping with carrier partners.

Assess transit-time matrices to key zip zones, validate carrier contracts and pickup frequency, and evaluate multimodal options (feeder vessels, regional trucking). Use sample lane analysis and historical on-time performance to model delivery windows and cost trade-offs for your top destinations.

Verify bonded facility certification, customs broker partnerships, and import/export documentation processes. Check security protocols (CCTV, access control), temperature monitoring and alarm systems, HACCP or cold-chain certifications, and local labor regulations or labor pool availability to ensure continuous operations and compliance.