This study researches the strategic decision-making process in information system (IS) implementations within the public sector. Organizations within the public sector are facing challenges in organizational and political influences. By investigating a case from an IS implementation in a Swedish public sector organization, this study aimed to provide insights into how their strategic decisions affect the implementation turnout and which improvement measures organizations can adopt in future similar IS Implementations. The research question is the following: How Can a Strategic Decision-Making Process Affect the Outcome of a Public Sector IS implementation? Semi-structured interviews were conducted with the responsible individuals as well as an end-user. The research showed that the focus for the strategic decision making was on costefficiency and out of convenience by choosing an already existing system within the organization. In future IS implementations it is recommended that the organization focuses on the value of team communication, end-user involvement and developing expertise internally.