In SC agility, aspects of virtualization play a significant role. The main objective
of a VE is to allow a number of organizations to develop a common working environment
or virtual breeding environment with the goal of maximizing flexibility
and adaptability to environmental changes and developing a pool of competencies
and resources (Camarinha-Matos and Afsarmanesh 2004, Gunasekaran et al.
2008). VEs focus on speed and flexibility. A virtual enterprise is enabled by building
a united information space with extensive usage of Web services.
VE structures are highly dynamic and their life cycles can be very short. The
existence of a number of alternatives for SC configuration is remarkable. This is a