BLUE BELL, Pa., Jan. 8, 2014 /PRNewswire/ -- Research sponsored by Unisys Corporation (NYSE: UIS) shows that U.S. business leaders currently view a private cloud as the best model for delivering secure IT and business services to end users. The study surveyed 103 business and technology decision-makers in the United States about the biggest challenges they face in using systems, tools and applications to deliver IT services to end users within and outside their organizations. The largest single group of respondents – 60 percent – identified providing adequate security as the biggest challenge in service delivery. The survey also questioned decision-makers as to the best IT models for overcoming their service delivery challenges. Fifty percent of the respondents cited a private cloud – one that is dedicated to a single organization or department – as the most effective model of cloud computing for secure service delivery. By contrast, 26 percent chose a hybrid cloud and 24 percent opted for a public cloud. "Protecting business and customer information continues to be a top concern for business and technology decision makers," said Rod Sapp, vice president, products and technology, Unisys. "Studies by industry analysts indicate that enterprise executives are gaining greater confidence in public and hybrid clouds and are accelerating adoption of those models. However, our survey makes it clear that a sizable segment of business and IT decision makers currently view private clouds – with their combination of responsiveness and control – as an ideal way to support constituents quickly and flexibly while preserving the integrity of business-critical information." More than 50 percent of the respondents also preferred a private cloud for key requirements such as ease of use and meeting new customer demands. Also, 92 percent of respondents showed interest in implementing security through creation of secure communities of interest (COI), which use segmentation through software rather than physical infrastructure to limit visibility and access to information to authorized groups of users.