This study conducts a systematic literature review on several aspects regarding the success of initiatives of digital transformation in the public sector (DTPS), focusing on case studies, processes, and success factors of the DTPS projects. The research was carried out using several scientific databases and indexers (such as ACM Digital Library, IEEE Xplore, and ISI Web of Science). The literature review process enabled the identification of a total of 38 case studies, four processes, and 51 success factors, all of which are presented and discussed, contributing both to theory and practice, to minimizing risks and improving the success of DTPS projects. The review process also enabled the identification of new research avenues.