Prioritize WMS/OMS integration, SLA terms (order cutoffs, on-time rates), scalable labor models, slotting and pick-path efficiency, returns handling, and transparent billing (storage, picks, packaging). Verify carrier connectivity and reporting cadence to ensure visibility and cost control.

Location determines parcel zone distribution: warehouses closer to dense customer clusters reduce zone boundaries and transit days. Proximity to major highways and sorting hubs shortens ground transit and enables lower parcel pricing through reduced zone multipliers.

Negotiate transparent fee schedules (storage, handling, returns), minimums, volume discounts, SLA performance metrics (OTD, accuracy), chargeback terms, audit access, and reporting frequency. Include ramp-up, peak-season handling, and exit provisions to limit commercial risk.

Cluster inventory by demand density and SKU velocity; use demand-driven replenishment, safety stock buffers, and regional nodes for high-velocity SKUs. Balance inventory carrying cost versus delivery savings—model zone-based parcel costs and fill rates before scaling locations.

Look for real-time inventory sync (APIs/EDI), event-based order tracking, carrier rate shopping, automated manifesting, barcode-directed picking, and configurable reporting. Open APIs and robust exception workflows reduce manual touchpoints and improve SLA adherence.