The End of Software: Transforming Your Business for the On Demand Future Do you know what is the real cost of your software? Before you reach for a calculator, be forewarned that it's a trick question. Even technology industry analysts and seasoned IT executives have difficulty putting a hard figure on the Total Cost of Ownership (TCO) of today's enterprise application solutions. What makes the equation so tricky is the sheer number of variables that must be factored in, many of which cannot be lined up in a neat column and reconciled, such as issues of security, availability, performance, problem resolution and change management.