Opinions expressed by Entrepreneur contributors are their own. Amazon Fire Phone, Google Glass, New Coke and Nintendo’s Virtual Boy: What do all these products have in common? They didn’t sell.

Budget for fixing bugs increases 10 times with every new stage of product development. So the earlier you start your software testing process, the more money and nerves you save. Last-minute testing ...

Developing the most groundbreaking new technology in the world doesn’t mean anything if nobody wants it or if the target audience finds it so difficult or frustrating to use that they ultimately ...