Data is becoming a powerful tool for both businesses and governments. Data can be public, open, government, and even linked. In several countries, including the United States, England, and France, open data has made it possible to open digitized public data explicitly to the general public. These data help strengthen relations between governments, businesses and citizens through greater transparency and the possibility of using them in several areas, including digital governance. The purpose of this work is to study open data influence on digital governance across four dimensions applied to some case studies related to several activity sectors, all to enhance its use.