Prioritize proximity to major transport nodes, on-site cross-dock and staging capacity, labor skill and availability, IT and WMS integration, SLA performance history, and value-added services (kitting, returns). Also assess scalability for peaks and alignment with your carrier network and packaging needs.

Transit times and carrier access determine delivery SLAs and shipping cost bands. Choose 3PLs with multiple carrier contracts, direct access to ports or rail, and proven route optimization to lower parcel costs and support next‑day/short‑lead omnichannel fulfilment.

Key cost drivers include rent per pallet position, labor rates and productivity, local taxes or incentives, inbound handling efficiency, inventory carrying costs, and outbound parcel/FTL consolidation capabilities. Evaluate dock density, racking type, clear height, and automation readiness.

Require native WMS/API connectivity, real‑time inventory visibility, EDI/OMS integrations, and a documented returns workflow. Confirm SLA metrics for pick accuracy, order cycle times, and exception handling, plus analytics for inventory velocity and cost-to-serve.