Accessible Rich Internet Applications (ARIA) is a set of attributes that help make web content and applications more accessible to people with disabilities. It provides additional information about user interface elements, allowing assistive technologies, like screen readers, to better interpret and interact with dynamic content. By using ARIA, developers can enhance the accessibility of complex web applications, such as those built with JavaScript frameworks. This ensures that users with disabilities can navigate, understand, and use web applications effectively, promoting inclusivity in the digital space.