Assess gateway proximity (port/airport), average linehaul times to primary markets, carrier density, and last-mile partner presence. Review historical transit-time data, throughput capacity during peak season, and whether the 3PL operates multiple sites for regional split-shipping to reduce transit zones and costs.

Prioritize order accuracy, pick-and-pack efficiency, returns processing, kitting/assembly, and temperature control where applicable. Confirm WMS capabilities, API/EDI integration, SLA-backed performance metrics, and visibility tools for inventory and order tracking to meet omnichannel expectations.

Bonded warehousing can defer duty payment and speed export re-exports; integrated customs brokerage reduces clearance time. Evaluate the 3PL’s customs experience, average clearance lead times, documentation accuracy, and any available duty-deferral programs to optimize cashflow and reduce dwell.

Negotiate OTIF, order accuracy, inventory accuracy, dwell time thresholds, chargeback rules for discrepancies, and scalable pricing tied to volume bands. Include termination clauses, minimum notice for capacity changes, and audit rights for inventory and process reviews.

Require a WMS with API and EDI connectivity, real-time inventory sync, exception alerts, and standardized reporting on picks, puts, returns, and carrier performance. Confirm sandbox access for integration testing and ongoing SLAs for data availability and support.