At this point, we should clarify that in every main category we have included technologies which are mentioned by international bibliography as "main" and/or those technologies which are already used by the enterprises. This means that there are also technologies, which have not been included either because of the lack of their use by enterprises or due to their particularity in the area of application. For the creation of these five main categorise, we relied on international bibliography and articles pertaining to the ICTs. (Davenport 2000; Hitt, Wu, and Zhou 2002; Kumar 2001; Malone et al. 1999; O' Leary 2000; Laudon and Laudon 2006; Grover and Saeed 2003; Kumar and Hillegersberg 2000; Palaniswamy and Tyler 2000).