Abstract
The Internet architecture has been reconsidered along with newly emerging diverse Internet applications, and cooperation between applications and networks becomes desired. Inherently, an application service provider concentrates on serving its own application with the high performance while an infrastructure service provider needs to consider an efficient and fair use of its physical resources to simultaneously support different applications. We propose an architecture that coordinates requirements of both types of providers based on network virtualization technologies in general and Open Flow framework in particular. In our architecture, an application service provider can easily construct a virtual network for its application service, while an infrastructure provider can achieve an efficient use of physical resource adaptively within the restriction to maintain a required performance of supporting virtual networks.