The significance of user experience (UX) testing in product development lies in its ability to evaluate and enhance how users interact with a product. This testing identifies usability issues, preferences, and pain points through direct observation and feedback from real users. By understanding user behavior and expectations, development teams can make informed adjustments to improve functionality, navigation, and overall satisfaction. Effective UX testing leads to more user-friendly products, ultimately driving adoption rates and customer loyalty, which are essential for the success of any digital offering.