Swanson (1994) suggested that information systems innovation among organizations can be categorized into three distinct types: innovations that occur within the information systems function (Type I), at the individual user or work group level (Type II) and at the organizational level (Type III). Consistent with the perspective of Type III innovations, we discuss and analyse information technology adoption at the organizational level and conceptualize information technology adoption based on four elements in Scott Morton's (1995) MIT90 model. The terms of the four elements are slightly modified as information technology infrastructure, strategic alignment, organizational structure and individual learning, without losing the original meanings. Another element in the MIT90 model, management process, is considered separately and discussed specifically with regard to service innovation, to investigate its relationship to the other elements. The four elements of information technology adoption defined in this study are discussed below