The article “Digital Transformation in the Municipality of Rio de Janeiro” analyzes the evolution of public administration in Brazil, from the patrimonialist model to the digital model, highlighting the incorporation of New Public Management (NGP) and Digital Governance. The study presents as a practical example the 1746 application, from the City of Rio de Janeiro, created to centralize and facilitate the population’s access to public services. The text demonstrates that 1746 represents a concrete application of the NGP principles, focus on the citizen, efficiency and performance evaluation, combined with the transparency and participation provided by digital technologies. The case study highlights positive impacts such as agility in service, increased transparency and digital inclusion. The conclusion reinforces that digital transformation is essential for a more efficient, accessible State that is connected to the demands of society, promoting greater institutional trust and active citizenship.