The World of Business Management: Theories, Models, and Best Practices is a book, designed as the hands-on program to provide business executives with a chance to refresh and up-date their knowledge to succeed in running, managing, and operating practically any business with a little adjustment to a business size and type. Discussions lead leaders and managers with deep understanding of the connection between theories and models, based on a sound research, and practical implications, varied from business issues, situations, and cases, occurred in organizations quite often. Examples from the real-world scenarios provide support to the theoretical framework and set-up shift to the new paradigm of making decision and creating solutions for improvement. The seven books, incorporated in the all-in-one book serve as the courses of the professional development for administrators, managers of all levels, and leaders performed in small business (both profit and non-profit), middle-sized firms, educational institutions, and global corporations. The book also serves as a Capstone course for graduate students, purchasing their degree in the leadership and management field. The purpose of the book is to provide a guidance for business leaders how to run, manage, and operate in the rapidly changed world through the waves of disruptions. Students may use the book as a foundation for the literature review for the study of their choice, find the most vulnerable issue for deeper investigation within their thesis or dissertation, refresh or up-date their memory about what they learned during the entire course, prepared them to become executives. Unique context, provided in examples and practical implications, may assist both students and executives apply strategies and initiatives used by the leaders of other organizations to handle situations and cases in their organizations. Material, incorporated in each chapter, facilitates discussions and inspires business leaders, managers, and graduate students purchasing their degrees in business and educational administration, leadership, and management field in the process of developing a strong foundation how to operate in a variety of business approaches. Articles in the book are based on widely-recognized research and research provided by the authors of this book for working purposes as the organizational development consultants. The authors are invited the wide audience of leaders, managers, and graduate students to expand their knowledge how to operate in a variety of business approaches and resolve problems in practice. Multiple perspectives, provided in this book, make its context a powerful source of guidance how to meet and survive through the challenges of the 21st century. The authors believe that the guidance, provided in this book, may assist leaders and managers of the contemporary organizations in nearly of each industry to operate in increasingly challenging fast-paced and often revolutionary updated environment. The original idea for creating this book evolved the authors' willingness to share their knowledge, obtained from the research conducted for both their education within doctoral study and work-related purposes. Operating own consulting firm Lifelong Approaches, both Dr. Goretskaya and Dr. Bichinsky have performed also as educational and organizational development consultants and have helped many executives in the business and educational organizations of any size to resolve the organizational issues. Collaborating with the organizational representative, the consulting team has helped executives to find solutions within the diagnostic stages and has coached them during an implementation process. The most substantial leadership and management philosophies, perceptions, activities, technologies, changes in organizational structures and cultures, and stories, described in this book, were drowned from both research and real-life scenarios.