The book concludes with the suggestion that the key condition for the required paradigm change in organization design is a change in managerial discourse which depends to a large extent on the professional education of managers. According to traditional management education, managers have several roles and although organization design is included in many of them in a more or less implicit manner, designing remains relatively marginal. Organization designing, which is differentiated from managing and strategizing, is defined as comprising the following as a set of activities: creating, monitoring, shaping, reshaping, assessing, and improving artefacts at the three organizational interfaces: the identity and values interface, the market interface, and the internal interface. It is also suggested that for the new design role of managerial activity to flourish and take hold, it must be framed within a new type of culture, that is, a culture of human-centric, leaderful organization design(ing). The chapter ends with a summary of the key concepts used in the book, drawing attention to the issues that managers-as-designers need to be aware of.