The use of Software as a Service (SaaS) has skyrocketed over the last few years and shows no signs of slowing. What’s driving that demand? An IBM Center for Applied Insights study – based on input from more than 800 IT and business decision makers worldwide – offers some surprising answers. As expected, reducing the total cost of ownership (TCO) of their applications is the top reason companies try SaaS. However, top performers are gaining something even more critical: competitive advantage. Leading companies are leveraging SaaS in powerful and even transformative ways.