Sarcouncil Journal of Engineering and Computer Sciences

Abstract: The rapid evolution of digital payment systems has created unprecedented challenges in fraud prevention, as traditional rule-based detection methods struggle to keep pace with sophisticated AI-powered fraud schemes. This article examines the convergence of artificial intelligence, cloud-native database technologies, and graph analysis as a paradigm shift in real-time fraud prevention capabilities. Through comprehensive analysis of implementation strategies and real-world case studies, the article explores how leading financial institutions leverage cloud-native databases like Google Cloud Spanner and Amazon Aurora alongside graph databases such as Neo4j and Amazon Neptune to create multi-layered defense systems. The integration of these technologies enables organizations to process thousands of transactions per second while maintaining sub-second detection latency and significantly improved accuracy rates. The article reveals that ensemble machine learning methods, combined with advanced feature engineering and optimization strategies including model quantization and hardware acceleration, deliver transformative business outcomes across multiple metrics. The article demonstrates how AI-driven systems achieve dramatic reductions in false positive rates, minimize manual review requirements, and enable proactive identification of fraud networks before significant losses occur. This technological transformation represents not merely an incremental improvement but a fundamental shift in how financial institutions approach security, enabling them to balance stringent fraud prevention with seamless customer experiences in an era of instant payments.