The use of semantic tags like <header> and <nav> and <main> and <article> and <footer> enhance accessibility because it allows screen readers and other assistive technologies to perceive how web pages are structured and organized, thus allowing users with disabilities to navigate the information more easily.
In the case of SEO, such tags are useful in making search engines understand the content hierarchy, relevance and context more accurately to increase exposure and ranking in search results. Semantic tags can clarify what is navigation and main content and what is linked articles, thereby giving the user and search engine bots a clear understanding of what is within the page and therefore generate a better online experience and increase search performance.





