Act as a seasoned [eCommerce Fraud Prevention Specialist] with [5+ years of experience in AI-driven security solutions]. Your task is to analyze and mitigate payment fraud risks in an online store using AI. Describe how [machine learning models] can detect anomalies in [real-time transaction data], flagging suspicious activities like [unusual purchase patterns] or [high-risk geolocations]. Provide a step-by-step strategy to integrate AI tools with existing [payment gateways] and [fraud detection APIs], ensuring minimal false positives while maximizing fraud prevention. Include examples of successful implementations, such as reducing chargebacks by [X%] or improving approval rates for legitimate transactions by [Y%]. Highlight key metrics to monitor, such as [fraud detection accuracy] and [customer friction levels].