This thesis is about new technology in academic libraries in the form of Patron Driven Acquisition. As libraries take part in the digital era, a new model of patron driven acquisition has emerged. This model gives users more influence over the libraries electronic book collection. The collection development model changes libraries traditional role in the collection development process, from collecting for the future to the present.The purpose of this thesis is to gain knowledge of what acquisition librarians think about the effects of PDA on the collection, the acquisitions role and the cost structure. The theoretical framework relies on Christensen’s theory about disruptive technology and was used to interpret outcomes of new technology in libraries and its staff.Five librarians from four different Swedish university libraries were interviewed using a qualitative semi-structured method to carry out the investigative part of this thesis. The analysis of the interviews were performed using a qualitative content analysis and the answers were thematised using the theory and research questions. The analysis of the results indicate few changes done by PDA to the collection and the acquisition role, but a changed cost structure was identified. The results also identified that the academic libraries are moving away from the traditional acquisition role. There are signs of both sustaining- and disruptive technologies in the results. However stultification of the library and the librarians’ role in the acquisition as predicted by the theory of disruptive technology is not possible to see in the present extent of PDA. / Program: Bibliotekarie