In an international theoretical framework relating to the challenges of digitalization on public sector commu-nication, the article focuses on the open government process to present a historical review of the public sector communi-cation as it has developed in Italy in the past thirty years. Definitions, reforms and the regulatory framework, structures and competences, different communication approaches and goals are collected here thanks to those “scholars’ voices” which have fuelled the scientific debate on communication in public administrations since the 1990s. A diachronic approach is necessary in order to investigate the dynamic nature of the relationship between citizens and public sector organizations in a wider changing context and...