Prioritize carrier and intermodal access, facility layout (pick/pack, bulk, temp-controlled), WMS and API capabilities, inventory visibility, and documented KPIs (OTD, pick accuracy, inventory accuracy). Also assess seasonal flex, staffing models, and contingency plans to preserve SLAs during peak demand.

Benchmark warehouse rent, labor rates, utilities, and local tax or incentive programs against transit-cost savings. Lower labor and operating costs can reduce per-unit handling, but factor in carrier rates and transit times to estimate total landed fulfillment cost rather than standalone rent.

Require a modern WMS with real-time inventory sync, APIs or EDI for order and tracking flows, automated ASN and returns handling, and dashboarded KPIs (cycle counts, pick accuracy, order lead times). Data export and SFTP options for ERP integration are important for B2B customers.

Request peak-capacity plans, headcount ramp timelines, seasonal labor sourcing, and proof of prior peak performance (KPIs). Run a pilot or simulated peak test, review contingency carriers, and include performance-based clauses in contracts to ensure capacity commitments are met.