This paper examines the development, implementation, and practical application of the new Electronic Public Procurement Notice Board of the Republic of Croatia (EOJN RH) and its contribution to modernizing the public procurement system. The focus is on the importance of fully electronic, paperless public procurement, which significantly enhances transparency, reduces the likelihood of errors, and simplifies participation for bidders. The paper emphasizes Croatia's advantages compared to neighboring countries, which still lack fully electronic public procurement processes. In these countries, incomplete digitalization creates administrative barriers for bidders, increases the risk of errors, and diminishes transparency. Furthermore, World Bank procurement guidelines, which still allow partial reliance on paper documentation, present additional challenges for bidders by increasing procedural complexity. By contrast, Croatia's comprehensive system demonstrates the benefits of full digital integration in public procurement. The EOJN RH facilitates automated procedures, reduces administrative burdens, and provides users with a more transparent and efficient system. The findings of this paper highlight how fully digitalized systems like EOJN RH not only improve public trust and accelerate procedures but also set a benchmark for regional and international integration in public procurement practices.