Prioritize location and transit times to core markets; multimodal access (road, rail, port/air); technology integration (WMS/TMS/APIs); transparent pricing with activity‑based billing; SLA definitions for pick/pack, cutoffs, and returns; and the 3PL’s capacity to scale during peaks.

Proximity to major highways and intermodal links reduces drayage and linehaul costs and shortens lead times. Dense carrier networks improve consolidation and LTL economics; reliable inbound/outbound lanes increase schedule predictability and lower expedited spend for last‑mile deliveries.

Essential capabilities include flexible slotting and fast pick/pack flows, dedicated returns processing, kitting and light assembly, temperature‑controlled zones if required, real‑time inventory visibility, multiple shipping integrations, and configurable SLAs to separate B2B and consumer service levels.

Run an RFP with detailed volume profiles and peak scenarios, request WMS screenshots and API specs, perform site visits and operational audits, pilot real orders to validate SLA adherence, negotiate clear KPIs and pricing terms, and include scalable capacity clauses and exit terms in the contract.