This study presents a critical epistemology about the growing participation of technology giants in strategic sectors of the federal administration in the field of public health in Brazil. First, the development of the main Brazilian public policies on Digital Health is presented in chronological order, seeking to demonstrate its evolution and promotion of private capital participation in the area, as well as the outsourcing of services. Subsequently, I mobilize the concepts of Digital Colonialism and Data Sovereignty to demonstrate what the opposition between them represents, and how this can be observed in practice, in the field of health. Finally, through document analysis and primary sources, I bring the research question to the case study: what are the consequences of hiring the foreign multinational Amazon - current provider of cloud data storage and processing services for the Ministry of Health - for Public Health in Brazil?