Investments in broadband access are very useful for local community, especially for the underdeveloped and developing countries. The emphasis is on importance of broadband infrastructure and the use of Internet in the world, the EU and the Republic of Croatia as one of its member state. Implementation analysis of the "Slavonian Network" project in Slavonia, (Croatia region) for the period 2012 to 2017, points to a number of problems that were recorded in development of the broadband and to technical, economic, legal, and social issues as well. The density of broadband connections and users in Croatia is significantly lower than the average of the EU, and in five counties in the Slavonia region, this average is in turn lower than in Croatia. This state of affairs prevents social and economic development, effective functioning of the public administration, and inclusion of the region in modern communication within the country and within EU. The construction of broadband infrastructure is a significant economic and technical activity for all countries, especially for the countries lagging behind in economic and technological development. This paper points to the model of regional approach to building broadband infrastructure that can be a good model for all developing countries.