Innovations arising from digital transformation (DT) have been pursued by various sectors and have become the basis of society s new digital infrastructure. However, many concepts and definitions are presented for DT, making the understanding very confusing. In parallel to TD, there are digital technologies that have presented a new perspective for business strategies and processes, products and services, relationships with partners and dynamic capabilities of the company, involving different sectors and industries and generating opportunities for business strategies. The central question of the research contemplates the telecommunications sector, which can be considered the base segment with regard to digitization due to its role in the provision of virtual signals, however, there is a lack of research addressing this sector and the digital transformations of your business processes. For this reason, the research proposes, in two stages, to conceptually understand the digital transformation and observe the success factors, barriers and results of digital transformation in business processes, the first stage being represented by the systematic review of the literature and the second stage with the carrying out a case study in a national telecommunications company contrasting the findings in the literature with the real case. The contribution of the research is a better understanding of the digitization of business processes in the telecommunications sector and the formation of a support base for researchers and managers regarding the main findings.