The Artificial Intelligence Revolution in Digital Advertising Marketing an Applied Study

AI in digital advertising marketing has attracted a lot of attention as it can change consumer behavior and expand business results. In this paper, we analyze the influence of AI-powered personalization models such as XGBoost on digital marketing with emphasis on performance improvement in CTR, Conversion Rate and ROI that based on the machine learning algorithms. Through the current experimental study comparing how XGBoost-powered personalized ads perform versus traditional non-personalized ads, we find that AI drives significantly stronger user engagement and conversion. Moreover, AI-based marketing also means more financial efficiency, translating into improved ROI metrics. These insights highlight the transformative impact of AI on digital advertising strategies and further reinforce the value proposition of leveraging AI in marketing initiatives for more personalized, effective, and cost-efficient campaigns.