This document discusses marketing in the 21st century. It identifies four key trends shaping modern marketing: globalization, digitization, innovation, and collaboration. Globalization has expanded both supply and demand on a global scale. Digitization, driven by the internet, allows for more interactive, personalized, and data-driven marketing. Innovation is necessary in products, services, business models, and marketing methods. Collaboration occurs between organizations, customers, and across industries. As a result, 21st century marketing is more ubiquitous, viral, interactive, integrated, and relies heavily on online channels. The document provides examples of successful modern brands and encourages readers to learn more about technology-driven marketing approaches.