Prioritize throughput metrics (pick/pack rates), inventory accuracy (cycle count policies and WMS capabilities), available racking and temperature control, inbound/outbound door counts, and systems integration (API/EAI for order and inventory sync). Also assess scalability for peak seasons and fallback capacity.

A central 3PL typically reduces door-to-door transit times to multiple regions, increases available carrier lanes (LTL/FTL), and enables route optimization that lowers per-shipment costs. Expect improved replenishment cadence for B2B customers and shorter eCommerce last-mile runs.

Look for reverse logistics processes, dedicated returns workflows, lot and serial tracking, omnichannel order routing rules, split-fulfillment support, and real-time inventory visibility. Proven SLA performance for same-day/next-day pick-and-pack is critical for consumer experience.

Negotiate clear pricing for storage, receiving, pick/pack, value-added services, and returns; establish volume breakpoints, minimum terms, SLA penalties, and KPIs for accuracy and on-time fulfillment. Include capacity-flex clauses for seasonality and provisions for system integrations.