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The role of information systems (IS) in gaining competitive advantage in business has received extensive coverage and debate in the literature (Carr, 2003). IS research in developing countries emerged to grasp the benefits of using IS technologies to improve business processes and enhance productivity. However, it has been argued that it is not the IS solution itself but its utilization in business what provides competitive advantage (Al-Qirim, 2007a). Insights from practice has shown that a significant percentage of IS failure can be attributed to low level of end-user acceptance and use particularly in developing countries (Heeks 2002; Amid et al., 2012). This triggers the importance of having continuous research about critical success factors (CSF) that affect IS success. In this study, we refer to IS success as factors that affect current use and IS satisfaction which are commonly accepted and used (DeLone and McLean, 1992; Rouibah et al., 2009; Gorla et al., 2010; Rouibah et al., 2015). Over the last three decades numerous CSF were considered either in IS success model or in the technology acceptance models. Among the studied CSF the following: information quality (Wixom and Watson 2001; DeLone and McLean, 1992; DeLone and McLean, 2003; Almutairi and Subramanian 2005; Gorla et al., 2010; Rouibah, et al., 2015; Ou et al., 2016), system quality (Wixom and Watson 2001; DeLone and McLean, 1992; DeLone and McLean, 2003; Almutairi and Subramanian 2005; Gorla et al., 2010; Rouibah, et al., 2015; Ou et al., 2016), service quality (DeLone and McLean, 2003; Gorla et al., 2010; Rouibah et al., 2015; Ou et al., 2016), perceived usefulness (PU) and perceived ease of use (PEOU) (Davis 1989; Igbaria et al., 1995, 1996, 1997; Rouibah et al., 2009), the availability of training (Igbaria et al., 1995, 1997; Rouibah, et al., 2009), top management support (Igbaria et al., 1995, 1996, 1997 ; Wixom and Watson 2001; Anandarajan et al., 2002; Al-Gahtani 2004 ; Rouibah, et al., 2009; Bano et al., 2016; Al-Qirim, 2007a,b), end-user involvement (Frantz and Robey 1986; Kujala 2003; Santosa et al., 2005; Rouibah, et al., 2009; Bano et al., 2016), intrinsic and situational motivation (Santosa et al., 2005), social influences (Karahanna et al., 1999; Al-Gahtani et al., 2007; Rouibah, 2008), and facilitating conditions (Al-Gahtani et al., 2007).