The emergence of Grid and Cloud computing enables in particular small and medium sized companies to exploit new market opportunities by virtualizing part of their IT infrastructure to external providers as well as on-demand established collaboration with partners providing complementary skills within such a Virtual Organisation. In this book a Dynamic Virtual Organisation Concept is presented combining existing work in in the field of economics around the Virtual Enterprise with a more IT technology oriented model from the Grid Computing domain. Starting from this model a set of abstracted use cases are analyzed and key requirements are developed. Based on them a general concept for the management of Dynamic Virtual Organisation and a concrete instantiation for the domain of Large Scale Data Centre Management is provided. The framework is partially based on results achieved by the author within industry driven large scale collaborative research projects such as Akogrimo, BREIN, GeneSyS, NextGrid and BEinGrid. These projects with partially more than 90 partners from academia and industry in Europe had been leading initiatives in this field.