Identity management has become a big concern for large international companies. How to handle different access rights in a delegated global administration give a lot of challenges. The need of those concepts is arising out of an enormous amount of possible users that are reached when companies put their core applications for easy access on the Internet. But clear signs of an early market make it hard for decision makers to find strategic solutions. Instead we have diverging visions from the market leaders and standard communities. This book shows a solution how a concept model can be built and controls this enormous administration. The book has focus on conceptual solutions in front of detailed technical setups. And this book will hopefully give you some good ideas how to form the architecture for a successful Identity management within you enterprise.