In today's digital era, Digital Transformation (DT) is crucial in empowering businesses to maintain competitiveness. However, many firms find it difficult to successfully implement DT projects, and many have had unsatisfactory results. As a result, Information technology (IT) organizations offer advisory services to assist other businesses in their DT efforts. There haven't been many empirical studies looking at digital transformation projects within IT organizations, despite the fact that IT companies are quite knowledgeable about the success elements required for the digital transformation projects of their clients to succeed. This study will answer the question, what are the success factors in digital transformation in an IT Company in Sweden. The research strategy was a case study that was applied at a Swedish IT Company. Semi-structured interviews with seven staff members who were involved in DT projects that had been successfully completed at the company were used to get the primary data. The participants in the study were chosen using a non-probability sampling method, and the results were analyzed using thematic analysis. The framework for technology-organization-environment (TOE) was used to categorize the success factors for DT that were identified in the literature. The study's conclusions identified seven potential DT success factors. The findings were categorized using TOE framework. Two of the potential DT success factors discovered are related to the technological context, five are related to the organizational context, and two are related to the environmental context. The identified potential success factors in DT are also categorized into ten different sub-themes, of which seven subthemes are similar to those identified during the literature review in chapter two, while three of the subthemes are newly identified. The newly identified sub-themes are presence of skilled IT professionals, flexible goals towards digital transformation, and Access to Information and communication technologies (ICT) infrastructure. The outcomes of this study have the potential to provide valuable insights for IT companies in Sweden that are currently involved in or planning digital transformation initiatives. The identified success factors can assist these companies in their digital transformation journey by offering guidance and direction.