Nowadays, the acceleration toward digital transformation changes both the way business is done and customers behavior; so hotels have to keep pace with this rapid evolution and seek to digital transformation by adopting the advanced information technologies. This research was conducted with the aim of examining the effect of digital transformation on customer satisfaction so the research focuses on the most prominent information technologies related to the guest-cycle stages. The problem of this paper is summarized in the absence of the related literature in this subject concerning to the Egyptian hotels, as well as the lack of hotel managers and employees' awareness of the optimal utilization of information technologies, in addition to the shortage of the implemented advanced ITs in hotels. So, a survey was applied on 400 respondents in four and five-star hotel guests in three Egyptian cities, Cairo, Sharm-Elshiekh and Hurghada, to investigate the impact of guest-cycle ITs on customer-satisfaction in order to determine which set of ITs in the guest-cycle stages can affect the customers satisfaction, as well as determine the differences between guests perceptions toward the study variables and the differences between their preferences toward using ITs according to their demographic features including; nationality, age and gender. The results revealed the importance of all guest-cycle ITs for customer satisfaction, as each of them has a significant effect on customer satisfaction. As well as, the guests' preferences toward using ITs differ only according to their nationality.

research is summarized in the absence of the related literature in these subject concerning to the Egyptian hotels, as well as the lack of hotel managers and employees awareness of the optimal utilization of information technologies, in addition to the shortage in implementing the most advanced ITs in Egyptian hotels although they are implemented in some of the largest global chains. So, an organized interviews were conducted with 90 of four and five-star hotel managers in three Egyptian cities, Cairo, Sharm-Elshiekh and Hurghada, to investigate the impact of the implemented ITs on decision making, in addition to determine which of the advanced ITs are implemented in the Egyptian hotels and which are not implemented, as well as determine the differences between managers" perceptions toward the study variables according to the hotel degree. The results revealed that the advanced ITs significantly affect the decision making process. As well as, it also revealed that both for and five-star hotels approximately implement the same information technologies and both of them do not implement the most advanced ITs such as; (robots, virtual reality and selfservice kiosks), as well as the awareness of five-star hotel managers differ from four-star hotel managers toward the contribution of advanced ITs in the decision making process.