Usability testing is a user-centered evaluation method used to assess how easy and effective a product, such as a website or application, is for real users to navigate and interact with. During usability testing, participants are asked to complete specific tasks while observers note any difficulties or confusion encountered. The goal is to identify areas where users struggle, uncover potential improvements, and ensure the product meets user needs and expectations. This process helps teams refine design and functionality before wider release, ultimately enhancing user satisfaction and overall product quality.