The marketing landscape has undergone radical transformation in the past two decades, driven by technological advances and changing consumer behaviors. This comprehensive analysis traces the evolution of marketing strategy from traditional mass media approaches to sophisticated, data-driven personalization techniques. The study examines how digital platforms have revolutionized customer acquisition, retention, and engagement strategies. Key areas of focus include the rise of social media marketing, influencer partnerships, content marketing, and marketing automation. The research also explores emerging trends such as artificial intelligence in customer targeting, voice search optimization, and the growing importance of sustainability in brand positioning. Drawing from case studies across various industries, this work provides practical insights for marketing professionals navigating the digital transformation while maintaining authentic brand connections with increasingly sophisticated consumers.