This review paper presents a comprehensive framework that integrates predictive analytics and customer segmentation techniques to optimize marketing strategies across three critical stages of the customer lifecycle: acquisition, engagement, and retention. We begin by examining the role of diverse data sources—transactional, behavioral, and demographic—in informing predictive models. The discussion then moves to an evaluation of advanced modeling techniques, including machine learning classifiers, ensemble methods, and deep learning architectures, highlighting their strengths in forecasting customer behavior. Next, we explore segmentation methodologies such as clustering, RFM analysis, and hybrid approaches, demonstrating how these methods enable precise targeting and personalization. We illustrate how the combined framework supports dynamic decision-making: predictive models identify high‑value prospects for acquisition campaigns; segmentation-driven insights fuel tailored engagement initiatives; and churn‑prediction algorithms guide retention efforts. Practical challenges—data quality, model interpretability, scalability, and ethical considerations—are critically assessed, with best‑practice recommendations for implementation. Finally, we outline research gaps and propose future directions, including real‑time analytics integration, explainable AI for transparency, and cross‑channel orchestration. This integrative review aims to equip marketing scholars and practitioners with actionable guidance for leveraging analytics to enhance customer‑centric outcomes and drive sustainable competitive advantage.