Analogous to virtualization in computer science, virtual organizations abstract from given physical
restrictions and thus become independent of size and business area. They consist of real
companies that come together to carry out only one common project. Each company contributes
parts of the whole product in terms of components or services. Conceivable forms of organizations
are static-, broker- and decentralized-dynamic networks (cf. [Ins99]). Concerning these
organizational structures, the differentiation criteria are the coordination and structuring aspects.
While static networks are contractual regulated, broker- and decentralized-dynamic networks are
structured by market principles. Generally, virtualization offers a possibility to enhance capacity
and flexibility. Enterprises can reduce their activities to their core business [Wil98]. Thus, virtual
companies become ”Best-of-Everything-Organizations”.