Prioritize measurable service levels (OTIF, order accuracy), technology (WMS, API/EDI), network footprint (proximity to customers and cross‑dock points), cost‑to‑serve transparency (storage, handling, pick/pack rates), scalability for peaks, and the provider's experience with your channel (eCommerce vs B2B).

Location determines route density and carrier options: facilities nearer population centers and intermodal nodes reduce transit time and zone charges; proximity to ports/airports improves inbound flexibility; location also impacts labor availability and land costs, which flow into per‑order fulfillment pricing.

Include KPIs such as order accuracy, on‑time shipments, inventory accuracy, dock‑to‑stock cycle time, return processing time, and clear chargeback terms. Specify reporting cadence, audit rights, SLA remedies, and capacity commitments for seasonality to align incentives.

Require a robust WMS with real‑time inventory visibility, API/EDI integrations to your ERP/OMS, parcel carrier connectivity, rule‑based order orchestration, and returns management. Dashboarding and automated alerts for exceptions enable faster decision making and better customer experience.