Accessibility testing is the process of evaluating digital products, such as websites and applications, to ensure they are usable by people with disabilities. This type of testing checks whether features like screen readers, keyboard navigation, and color contrast meet accessibility standards such as the Web Content Accessibility Guidelines (WCAG). The goal is to identify and resolve barriers that could prevent users with visual, auditory, cognitive, or motor impairments from effectively interacting with the product. Accessibility testing is crucial for legal compliance, improving user experience, and promoting inclusivity in digital environments.