This book helps readers develop a comprehensive understanding of diagnostics for strategic decision-making, with a focus on a method called rapid due diligence. This method presents a compelling solution to the need for effective diagnostics, drawing on academic rigor, critical thinking, systems dynamics, and advanced practicum to enable sound strategic decision-making. Guiding the reader through the six stages of the process from discovery, through analysis, synthesis, and interpretation, Thompsen engages all typical postgraduate disciplines in producing insights for practical application. Drawing on similarities with applied social science research, the rapid due diligence method is supported with scores of techniques, tools, instructions, guidelines, practical advice, and examples. Detailed cases and abbreviated examples of a variety of real strategic situations are provided from organizations operating in North America, Europe, Asia, India, and Australia. Ideal for graduate students, organizational leaders, and decision makers, this book is designed to invite deeper understanding and practical application of a strategic diagnostic process that discovers insights for achieving positive results.