Prioritize WMS capabilities and API integrations for real-time inventory and order routing, transparent SLA metrics (pick-to-ship times, accuracy), scalable labor models, and documented onboarding processes. Also verify zone transit times to your customer base, parcel carrier access, and the 3PL’s capacity for seasonal peaks.

Key considerations include:

Yes, provided the 3PL has a modern WMS with omnichannel order routing, dedicated labor for pick/pack, and established reverse-logistics workflows. Inventory pooling across close warehouses, real-time carrier rate shopping, and established returns processing SLAs are critical to achieve fast local fulfillment and cost-effective returns handling.

Model landed costs including outbound transit, parcel zone distribution, and inventory carrying costs. Lower facility costs may be offset by higher outbound shipping if transit zones expand. Factor in customer service SLAs, frequency of replenishment, and value-added services—sometimes paying modestly more for a closer node reduces total delivered cost and improves service.