This paper aims at examining the major trends in electronic resource development to academic libraries in Hong Kong. Due to technology advancement, the habits of library patrons in using library materials have changed, in particular, due to the ubiquity of smart devices and mobile networks. Moreover, with the decreasing costs of digital assess storage, related technologies and human labor requirement, digitization of electronic resources have been developed rapidly. As such, users' expectations have shifted in the past decade, particularly for research and scholarship, because digital records and electronic materials have become easier and convenient to access in a 24/7 environment. In this study, we investigate these changes of academic libraries in the format of resources (tangible or intangible), purchasing types (ownership versus access), and acquisitions options ("just-in-case" acquisitions or "just-in-time" acquisitions). We also examine issues accompanying these technological shifts, including library policies, copyright, budget, and consortial collaboration among academic libraries. This study identifies the drivers of evolution, influences, changes in academic libraries, common threats, and opportunities, along with the future role of academic libraries through an analysis of data collected from literature and interviews with practitioners.