NONE 20260803082835859 naun/naun content-registration-form@crossref.org content-registration-form International Journal of Education and Information Technologies 2074-1316 Seppo Sirkemaa University of Turku, Pori Unit Pohjoisranta 11, 28100 Finland The reliability of information systems infrastructure is critical. After all, it is the basis of other business systems and processes in the organization. In a turbulent world development of a robust and reliable information system infrastructure is a challenge. Infrastructure should run as a solid foundation for operations, but be flexible when needs change. Information systems infrastructure should also provide a shield against different kinds of threats, such as viruses and hacking from the outside world. 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