How do you test something that doesn’t exist? The obvious answer is to build it. But what if it’s difficult, time-consuming, and/or expensive to build? You don’t want to risk wasting resources on an untested idea. A common approach that user experience designers (UX) use in such situations is Wizard of Oz studies.
Redesigning a website is usually about making its experience better. But change doesn’t guarantee better, just different. This is why user experience (UX) designers focus so much on user research. The more you know about user needs, as well as business and other requirements, the more you can eliminate some of that uncertainty about the impact of a new design. However, you will never know for sure how a design choice will perform until it's used with real users in real life. This is a nerve-wracking reality. A UX designer nor most project stakeholders are comfortable taking the risk of just changing something and seeing how it goes. Enter A/B testing.
Good, usable design comes from an iterative process in which you create and revise designs in repetitive cycles, coming closer to the desired result with each cycle. One of the best ways to learn how a design needs to be revised is usability testing. Many development process eliminate this important step or leave until the final product is built for a number of reasons. Learn how I used the Prototyping on Paper app and Zoom to push forward with usability testing of paper prototypes for an app I'm designing despite the social distancing restrictions of COVID-19.