This article offers a review of the concepts of “Internet Governance”, as well as the role of information systems and advanced technologies in them. The article attempts to analyze the barriers and threats in this direction, as well as to identify a qualitatively new pattern (“phase pattern”) of information systems in the Internet space and integrate it into the concept of “Internet Governance”. Threats such as Darknet “dark internet”, “blockchain” opposition, instability of internet connection, etc. are also given. The author cited the existing analytics on the concept of “Internet Governance”, and also formulated theoretical and applied regularity, which is important to take into account in the further development of information systems and risk assessment in the formation of international information ecosystem with the use of advanced technologies. The article provides normative-legal mechanisms of the concept realization and substantiation of its significance in the conditions of legal uncertainty. The phases of information systems development are considered in detail, as well as the characteristic features of each phase and their role in the formation of information systems. The author cited generalizing documents on the concepts of “Internet Governance” to substantiate his positions, and also considered the possibilities of information systems development, taking into account the individual national experience (operation of the “Gostech” system and other ecosystems). The article attempts to highlight the system-wide approach to information systems and the possibility of their reaching the international level within the framework of the general concept of “Internet Governance”.