In the rapidly evolving digital landscape, data-driven marketing has emerged as a pivotal strategy for businesses seeking to enhance customer engagement and optimize marketing outcomes. This review paper delves into the transformation from traditional to data-centric marketing, highlighting the historical evolution and technological advancements that have propelled this shift. It examines the critical role of data analytics in understanding customer behavior, detailing the tools and techniques employed to interpret vast amounts of customer data. Furthermore, the paper explores personalization as a key marketing strategy, discussing methods to achieve it through data analytics and emphasizing the importance of customer segmentation. Ethical considerations and challenges in personalized marketing are also addressed. The impact of data-driven marketing is evaluated through successful case studies, and the future trajectory of marketing in the age of analytics is predicted. The review summarizes key insights and their strategic implications for marketers, underscoring the necessity of balancing innovation with ethical responsibility.