This case study analyzes the strategic business management and marketing approaches of Quiznos, Subway, and McDonald's. It examines Quiznos' product and service offerings, marketing media, and the effectiveness of their marketing efforts, attributing their business challenges to ineffective marketing management and a lack of customer-centric strategies. The study contrasts Quiznos' strategies with those of Subway and McDonald's, highlighting Subway's focus on content building and customer safety, and McDonald's adoption of mixed marketing approaches, relationship marketing, and diversity marketing. The analysis also covers current trends in marketing, emphasizing the importance of content, marketing funnels, and customer relationship management. The paper references academic sources to support its claims and provide a comprehensive overview of the competitive fast-food landscape and strategic marketing practices.