If you are not user testing to improve the usability of your solutions, you are underserving your users:
Designing and testing software is connected to the idea that we are designing software that needs to be usable. I know I am doing a lot of screaming at you in this chapter. I don't mean to be demonstrative, but I think it is important to get this across. Usability testing your prototypes is part and parcel of user validation. If your idea works for your user, you want to make sure it is also usable. Many before me have established software usability best practices, and they have been established through rigorous user testing outcomes. We discussed usability heuristics and other methods that help a software product be useable. The only way to truly understand if your software is usable is to test it with your users.
Like other forms of user feedback, usability testing is focused on the user's ability to use a UI effectively throughout the execution...