Consistent with our mission to provide students with the most current and up-to-date account of the changes taking place in the world of strategy and management, there have been significant changes in the 13th edition of Strategic Management: An Integrated Approach. For the 13th edition, further changes were made in content. For example, Chapter 7 contains a more in-depth discussion of direct and indirect network effects and switching costs. In Chapter 8, we discuss how the rapidly changing international trade environment as exemplified by Brexit, the renegotiation of the North American Free Trade Agreement (NAFTA), and ongoing trade disputes between the United States and China, might impact enterprise strategy. In Chapter 9, we added an extensive section on the multiple benefits of horizontal integration, and added a section on modularity and platform competition. Chapter 10 was strengthened by the addition of a section on how agency problems can lead to acquisitions that do not create value