Skipping on usability testing is dangerous for your project. You may spend lots of time and money in developing a solution that will not work well when end users see it. Therefore, user testing should be an obligatory step of every project. Usability testing lets us make sure that: people understand what is the purpose of a product, buttons are named correctly and are easy to understand, the product is intuitive and easy to use, a prototype has no usability issues that can lead to conversion drops.