Simply because a deliverable has been created does not mean that the right deliverable exists. Any company can design a product that will not work correctly. Any company can manufacture a product that no one will purchase. Any company can build an attraction that people will not attend. Any company can produce a deliverable, perhaps based solely upon the whims of management, that adds no value to the business.
All of these deliverables could have been produced within time, cost and scope, but are they really successes?
Defining success is often treated in the same context as beauty; it is defined through the eye of the beholder. Success cannot be defined in a few words nor with just a couple of metrics. The timing of the success measurement is also critical. The definition of success is complicated and can involve the interaction of several metrics. The definition can become even more complex based upon the industry or the type of project.
As an example, in this paper we will consider the definition of success on innovation projects which may very well be the most difficult projects in which to measure true success.