Prioritize multimodal access (port/air/road), WMS and API integrations, SLA definitions for pick-and-pack and lead times, inventory accuracy practices, and value-added services (kitting, returns). Verify throughput capacity, seasonal scalability, and transparent cost models including storage tiers and pick fees.

Proximity to efficient feeder ports and frequent inter-island sailings reduces lead times and freight spend. Choose 3PLs with established carrier contracts and consolidated LCL/LTL routing to lower per-shipment cost and improve predictability for distributed island delivery windows.

Seek facilities with validated cold-chain zones, secure storage, cycle-count disciplines, bonded options if needed, and segregated picking lanes for omnichannel SKUs. Confirm monitoring systems, contingency power, and documented QA processes for sensitive or high-value goods.

Model landed cost using inbound freight, local drayage, warehousing (storage and handling), and last-mile delivery. Layer service KPIs—SLA penalties, order lead time, and fill rate—then run scenario analysis for inventory split (central hub vs regional nodes) to find the balance between speed and unit economics.