I dedicate this work to my mother and my father, to my brothers, they are the blessing, and they are the main source of support, thank you all. Thanks are extended to all the teaching staff in the Department of Electronic Business at the University of Petra, especially Dr. Hussam Barham, Dr. Firas Omar, Dr. Suhair Al-Jaghoub, Dr. Dear Arwa Al-Daya, Dr. Fayez Al Momani, Dr. Anas Kanaan, Dr. Yasmine Al-Sakka, Dr. Wasef Matar, Dr. Nassim Matar and Dr. Muhammad Al Khalidi. F.L.