A comparative analysis of the practice of implementing e-government in different countries gives an opportunity to identify the advantages and disadvantages of existing information systems, find ways to optimize and improve the efficiency of public administration. The purpose of this study was to identify the leading countries in e-Government development for comparison with Ukraine, and to apply their positive experience in implementing e-portals, creating the necessary regulatory framework, disseminating the Internet, and attracting citizens to participate in the processes of forming the information society. The article explores the dynamics of E-Government Development Index (EGDI) and E-Participation Index (EPI), analyzes the achievements of developed countries in e-government, and identifies leading countries such as the United Kingdom, France and Spain whose experience is useful for its application in Ukraine. The qualitative analysis of the achievements of different countries was based on the UN e-Government knowledgebase and the United Nations E-Government Survey from 2003 to 2018, information from e-Governance research articles, government website data, newsletters, and research findings. The study of e-government practice in leading countries and in Ukraine shows that the development of public information space has many similarities and the process of e-government formation in developing countries in many spheres follows the path of developed countries, preserving their own national features. The authors of the article have identified the main common components of this process, outlined aspects of improving the practice of e-government in the direction of building an effective system of public administration.