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.

Usability testing is an invaluable research method that involves observing representative users interacting with your product to assess how easy or difficult it is to use. The key benefits of this ...

Stakeholders have identified the need for a new software application. Business analysts have studied business practices and workflows, defined requirements, and requested functionality. Development ...