Require an integrated WMS with API/EDI connectivity, real-time inventory visibility, SLA-backed pick-and-pack throughput, returns management, and temperature control where needed. Also verify inbound receiving velocity, outbound cartonization rules, and metrics for order accuracy and on-time shipment.

Prioritize proximity to major highways and rail spurs, access to regional freight terminals and consolidation hubs, and local carrier density. Shorter first/last‑mile distances, availability of regional LTL and parcel carriers, and cross-dock options materially reduce transit days and shipping expense.

Baseline current metrics (freight per order, transit days, inventory days of supply, order accuracy), then compare landed transport, storage, labor, and fulfillment fees. Run a pilot to measure actual on-time delivery, unit cost per order, and customer-experience KPIs before scaling a full migration.