Focus on WMS and API connectivity, SKU velocity handling, racking and automation, inbound receiving throughput, pick-and-pack ergonomics, security and temperature control. Verify SLA metrics for pick accuracy and on-time dispatch, returns processing workflows, scalability for peak seasons, and access to preferred carrier networks and last-mile partners.

Closer proximity reduces linehaul miles and often lowers LTL and parcel zone costs, cutting transit days to destination markets. Evaluate access to major highways, intermodal ramps, and local courier hubs — these determine consolidation opportunities, pickup frequency, and options for expedited or multi-stop routing that affect landed cost and delivery windows.

Compare base storage rates, cubic vs. pallet billing, pick-and-pack fees, receiving and putaway charges, minimums, and value-added service costs. Review billing cadence, SLA credits, minimum guaranteed volumes, accessorial fees, and termination or scale-up clauses to ensure total cost aligns with forecasted order profiles and service objectives.

Agree on an onboarding timeline with WMS integration, EDI/API testing, SKU mapping, test shipments, and a phased SKU ramp. Set KPIs for accuracy, dock-to-stock timelines, and OTIF targets; schedule weekly reviews during ramp and defined remediation steps. Include contingency capacity for peak periods and clear escalation paths for operational issues.