Prioritize proven WMS and API integration, inventory accuracy, pick-and-pack throughput, cross-dock capacity, reverse logistics and returns processing, SLA-backed lead times, and visibility tools for tracking and reporting. Also confirm carrier partnerships and last-mile coverage for your target delivery zones.

Location affects drayage, toll access, and proximity to ports and industrial customers. Facilities near major corridors reduce inland miles and transit time, improve carrier choices, and lower total landed cost—particularly for inter-island flows that use ferry or combined road-sea legs.

Top providers offer configurable racking, multi-temperature zones, bonded warehousing, kitting and light assembly, quality inspection, packaging optimization, returns management, and configurable SLA tiers. Ensure the 3PL can scale space and labor seasonally.

Negotiate transparent pricing models (storage, handling, pick fees), minimums, performance SLAs with penalties, liability limits, insurance requirements, audit rights, billing cadence, and clear exit terms to avoid hidden costs and ensure predictable service during scale-up or exit.