The major targets of the following chapter are twofold. First it designed to unveil which factors have determined ICT diffusion across selected 36 Asian countries between 1980 and 2015. Second, it aims to uncover the existence of the ‘network effects’ that potentially may effectively enforce rapid spread of new technologies. To achieve empirical goals of this chapter we use Mobile-cellular telephony and Internet users penetration rates as response variables, and additionally we have selected the other 11 variables that may constitute strong determinants of growing ICT deployment. In our research we apply panel data models and dynamic panel data models, which allow us to detect both the existence of the ‘network effects’ and indicate which factors have contributed strongly to the process of ICT diffusion.