Prioritize proximity to target customer zones, multimodal carrier access, real‑time inventory visibility (WMS/API), SLA guarantees for pick‑pack and shipping, returns handling, and proven peak‑season capacity. Verify integration, reporting cadence, and contractual flexibility for volume swings.

Paris’s mix of air (CDG), major motorways, rail, and inland waterway access enables routing flexibility and consolidation. That carrier density improves delivery density and pricing, reduces lane lead times, and increases predictability when matched with a 3PL that offers robust carrier management and data analytics.

Confirm bonded storage, customs brokerage support, temperature control if required, automation level, EDI/API integration, security and audit controls, and documented KPIs for order accuracy and lead times. Check certifications relevant to your product categories and cross‑border requirements.

Model cost‑to‑serve by SKU velocity, storage and handling rates, pick complexity, packaging, and return rates. Include accessorials, minimums, and peak fees. Assess scalability through historical seasonal performance, ability to add value‑added services, and the 3PL’s network reach for future expansion.