This report provides a comprehensive analysis of brand management, using Nike and Adidas as case studies. It begins by explaining the importance of branding as a marketing tool and how it has evolved in business practice, followed by an analysis of the key components of a successful brand strategy, including public relations, digital marketing, search engine optimization, and social media. The report then delves into portfolio management strategies, brand hierarchy, and brand equity management, examining how companies manage their brands over time. The report also evaluates how brands collaborate and partner at both domestic and global levels, and it discusses techniques for measuring and managing brand value, providing examples to illustrate these concepts. The analysis covers brand reinforcement and revitalization strategies and concludes with an overview of the challenges and opportunities in brand management, making it a valuable resource for understanding brand strategies.