The article discusses the HTML <output> tag, which is often overlooked despite being part of the spec since 2008. It represents the result of a calculation or user action and provides built-in assistive technology support, making dynamic content more accessible. The author shares personal experiences and examples of using the <output> tag in real-world projects, highlighting its benefits for accessibility and simplicity. By using the <output> tag, developers can make their UI more accessible with less code.