Prioritize SLA-backed pick/pack accuracy, inbound/outbound dock capacity, slotting flexibility, and order throughput. Also assess integration capabilities (WMS/API), returns processing, reverse-logistics flows, and carrier mix to ensure service levels match channel-specific lead times. Reliability and scalability matter for seasonal peaks.

Tarn offers faster access to southern France and Mediterranean ports, and efficient road links into Toulouse for air cargo. Transit to northern France and Benelux can be modestly longer than from Île-de-France, but intermodal and road carrier density deliver dependable national coverage with competitive lead times for most eCommerce and B2B lanes.

Key cost drivers include land/rental rates, utilities, local taxes, and labor wage levels. Tarn typically shows lower real-estate and operating costs than Paris/Lyon regions. Evaluate availability of skilled logistics labor, peak-season temp workforce, local incentives, and proximity to suppliers to quantify landed cost and inventory-carrying tradeoffs.