The targeted readership of this book is project management professionals and scholars who are seeking to gain insights into the perquisites of project success. Therefore, this book was written with the following goals in mind: (1) To provide the readers with a carefully selected collection of real-life project cases from various industries and businesses. The cases give a good picture of how projects and project management are performed in Norway. (2) By building on contingency thinking, to present new insights about project success gained from analysing the cases collectively. These new insights include classification of project success factors based on project characteristics, and they also suggest that soft factors such as trust, commitment, loyalty and openness are imperative to ensure project success. (3) By using specific situations, problems, and approaches from these cases, to help communicate a more general idea, and to explain terms from project management literature that are important to understand the context and the meaning of these new insights. The study is peer-reviewed and presented as an academic text.