Book excerpt: For organizations to thrive, indeed to survive, in today's global economy, we must find ways to dramatically improve the performance of large-scale projects. Applying the concepts of complexity theory can complement conventional project management approaches and enable us to adapt to the unrelenting change that we ignore at our own peril. Managing Complex Projects: A New Model offers an innovative way of looking at projects and treating them as complex adaptive systems. Applying the principles of complexity thinking will enable project managers and leadership teams to manage large-scale initiatives successfully. • Explore how complexity thinking can be used to find new, creative ways to think about and manage projects • Diagnose complexity on a wide range of projects — from small, independent, short projects to highly complex, longer projects • Understand and manage the complexity of the business problem, opportunity, solution, and other dimensions that come into play when managing large-scale efforts Use the Project Complexity Model to determine the most effective approach to managing all aspects of a project based on the level of complexity involved.