@storybook/addon-interactions enhances Storybook with interactive testing capabilities. It allows you to visually test and debug components directly within your stories. This addon enables you to create scenarios where users interact with UI elements, and then assert expected outcomes. It streamlines UI testing by providing an intuitive interface for defining and executing these interactions, making it easier to identify and resolve visual bugs and ensure component behavior meets requirements. Ultimately, this helps to deliver more robust and reliable UI components.