Digital transformation is a concept that is currently being discussed and emphasized in many policies, industrial and corporate strategies. In the scientific literature, digital transformation is often discussed as one of the pillars of a sustainable economy.  On the other hand, the question is how to ensure that the digital transformation process itself is sustainable in the long term. That is, not only the transformation process itself but also the application of digital technologies in companies afterwards. This paper aims to explore the sustainability of digital transformation by analyzing its environmental, economic, and social impact. Through a literature review, this paper identifies several key factors that contribute to the sustainability of digital transformation, including the term energy transformation and education and digital skills, security, and business continuity. Based on the conducted research a model of sustainable digital transformation was proposed. The model presents the key elements for the sustainability of digital transformation. The paper concludes by discussing the implications of these findings for organizations, and individuals.