Prioritize WMS capability and integration (API/EDI), SLA definitions for lead times and accuracy, racked storage and throughput capacity, secure yard and dock access, labor availability and training programs, and multi‑carrier shipping options. Also assess reporting, inventory visibility, and returns handling to match your fulfillment model.

Transportation costs hinge on distance to major consolidation points and frequency of scheduled carrier pickups. Efficient road links and proximity to primary corridors reduce fuel and transit-time premiums. Assess multi‑carrier coverage, consolidation opportunities, and pallet versus parcel lanes to optimize cost per order and maintain predictable lead times.

Key features include modern WMS with inventory visibility and order routing, real‑time parcel label and carrier rate integrations, pick‑pack and kitting capabilities, returns processing, secure storage, and options for temperature control when needed. Ensure the 3PL supports SLA reporting and API connectivity for downstream systems.

Review lease and rate structures, minimum volume commitments, SLA penalties, insurance and liability coverages, termination and scale clauses, and contingency plans for seasonal congestion. Confirm compliance requirements, labor practices, and disaster recovery to mitigate operational and financial risk over the contract term.