Abstract: Despite the financial crisis and ongoing need for cost
cutting, companies all around the world heavily invest in Information
Systems (IS) and underlying Information Technology (IT).
Proliferation of governance of enterprise IT helps companies manage,
or rather, governs IS as a primary business function with executive
management involved in making decision about IS and IT. The
business value of IT is raising with the involvement of the executive
management in IT decision making process and quality IT
governance mechanisms in place. In this paper the practice of
governing the enterprise IT will be investigated on a sample of the
largest 100 Croatian companies. Research questions posed here will
reveal if there are some formal IT governance mechanisms, are there
any differences in perceived role of IS and IT between CIOs (Chief
Information Officers) and CEOs (Chief Executive Officers) of the
sampled companies and what are the mechanisms to govern massive
investment in enterprise IT.