As agile practitioners we are all familiar with the  Agile Manifesto and the positive impact it has had on companies, specifically in Information Technology (IT) departments around the globe. Although the Manifesto has helped us think and work differently and often in more effective and efficient ways, countless organizations continue to build products that customer don’t want or seldom use. I have worked with many companies from start-up’s to Fortune 10 organizations. The recurring question that most have no answer for is “How do we know we are building the right products for our customers?”  Peter Drucker, the founder of modern management, once said: “There is nothing so useless as doing something efficiently that which should not be done at all.”