The planetary magnitude of the economic meltdown hints eloquently that conventional methods of risk management and rating need to be reviewed. In an increasingly turbulent economy a new look at uncertainty and risk is mandatory as traditional approaches have been designed for a less severe and chaotic context. The book introduces a radically innovative approach to uncertainty and illustrates how complexity management assumes a modern form of risk management which is particularly suited for a turbulent economy. Innovative complexity-based rating schemes, such as on-line self-rating or holistic rating are introduced. The book advocates that thanks to objective and verifiable ratings, which are accessible to even the smallest of companies, it is possible to contribute to a more stable and sustainable global economy. Quantitative means of measuring the fragility and stability of corporations are introduced as well as an innovative complexity-based early-warning system.