This environment strives to be dynamic, reliable, and customiz-able with a guaranteed quality of service.1 Within this system, users have a myriad of virtual resources for their computing needs, and they don’t need a complete understanding of the infra structure.Cloud computing’s advent has made the declaration by Scott Mc-Nealy, Sun Microsystems’ founder,that “The network is the computer” a reality and given the old Sun marketing motto a new life