The trend of using ICT services in the cloud, and especially those based on as a service principle, in the past decade has significantly changed the way in which individuals, organizations, but also countries use information technologies. The project of a shared services centre establishment (CDU) aims to unify the state infrastructure of information and communication technologies. The conducted primary research is predominantly quantitative and examines the attitudes, perceptions and expectations of the stakeholders of the specific process of digital transformation of the information system under the state level umbrella, thereby creating a basis for the formation of an analytical framework. In addition to the mentioned quantitative focus, the research also included a qualitative level, especially related to the perception of the current situation and expectations of changes caused by the implementation of the CDU from the perspective of the surveyed segments. The results of the research showed that the new model of centralized sharing of electronic services, according to the perception of the respondents, manages digitized services better, reduces the overall degree of entropy and increases the measure of progress and optimization of the overall ICT base, which is a significant qualitative step forward compared to the current situation. The research further showed that the new model of shared services is perceived as economically consistent and technologically more advanced for all involved users or stakeholders. Respondents believe that data is safer and more accessible, and user bodies interact better through CDU's infrastructure interoperability system. This paper contributes to the existing literature on shared services by analysing the necessary prerequisites and components for shared service centres to start creating significant value for citizens, businesses and society as a whole. The research and interpretation of the results carried out as part of this doctoral thesis should serve to facilitate and support in all steps towards the adoption of the CDU model and platform in the Republic of Croatia, from sponsorship at a higher level, sustainable financing, optimization of personnel, change management, governance and clear service level agreements, according to service identification, design and delivery. In addition, the analysis carried out in this doctoral thesis indicates that the role of the CDU, along with its own data centres located on the territory of the Republic of Croatia, is crucial for solving the issue of digital sovereignty. The task of CDU management structures is to seek standardization of services across public sector bodies and to provide consistency and scalability of offer to drive efficiency. On the other hand, the goal of the heads of public sector bodies in charge of ICT is to deliver the technological prerequisites that will enable digital business services specific to their bodies. It is essential to find a common language between the top technological strategy of shared services and implementation at the level of individual government bodies, and in order to achieve this, it is necessary for all stakeholders to focus on a common strategic picture and commitment to results, rather than to technical solutions. Structure of the paper by main sections: 1. INTRODUCTION 2. MODELS OF VIRTUALIZED DATA CENTRES 3. EXISTING GOVERNMENT ICT INFRASTRUCTURE 4. GOVERNMENT ICT SHARED SERVICES MODEL 5. SHARED SERVICES CENTRE 6. USER EXPERIENCE OF THE DIGITAL ENVIRONMENT 7. PROPOSAL FOR CENTRALIZED SHARED SERVICES 8. DISCUSSION 9. CONCLUSION