Semantic HTML refers to the use of HTML markup that conveys meaning about the content it contains. This approach helps search engines and browsers understand the structure and purpose of web pages better. For example, using tags like <header>, <article>, and <footer> clearly defines different sections of a webpage, making it more accessible and easier to navigate. By employing semantic elements, developers can enhance the user experience and improve search engine optimization (SEO). This practice not only aids in creating a more organized code structure but also ensures that assistive technologies, such as screen readers, can interpret the content accurately for users with disabilities.