• Set a region decision policy: Use IP as the primary signal, validate with billing country and BIN country (if available), plus locale/timezone; send conflicts to a safe fallback.
• Configure pricing and display rules: Set regional price, currency, tax/fee, and shipping display rules, and keep a global fallback price.
• Roll out via gradual release or A/B tests: Start small and scale up; split traffic by stable identifiers so the same user doesn’t see flipping prices.
• Define metrics and an observation window: Track funnel conversion, revenue per visitor, refund/chargeback rate, complaint rate, and churn/retention; measure over at least one full purchase cycle.
• Review and iterate: Analyze conflict logs and customer feedback; handle exceptions (VPNs/corporate networks), refresh IP mapping sources, and tighten fallback behavior.


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