Evaluate location relative to key routes and customers, transit-time reliability, carrier access, WMS and API integration, transparent cost models (storage, pick/pack, inbound/outbound), SLA metrics and penalties, scalability, security and compliance, and value‑added services such as kitting, labeling, and returns management.

Request historical transit-time reports, sample route-level lead times, carrier agreements, on‑time delivery KPIs, and references from shippers in similar verticals. Conduct pilot shipments and include clear SLA definitions with penalties to validate promised performance before scaling volumes.

Prioritize a WMS with real‑time inventory, API/EDI connectivity, multi‑site inventory controls, lot/batch and serial tracking, pick/pack optimization, returns processing, and seamless integration with your OMS and carrier platforms to enable accurate fulfillment and visibility across channels.

Negotiate transparent rate cards for storage and pick/pack, volume tiers and rebates, minimums and termination terms, SLA definitions and remedies, billing cadence and audit rights, and provisions for seasonal flexibility, surge capacity, and technology access to manage total fulfillment cost.