Why sub-50ms API responses matter for checkout ROI, AOV, and personalization measurement

https://www.bookmarkpage.win/how-a-campaign-simulator-prevented-a-costly-promotion-disaster-daniel-s-story

Which questions about API latency, checkout conversion, and measurement will I answer—and why they matter? When you run an e-commerce checkout that shows targeted discounts or personalized prices, a single API call can sit squarely in the