Google's John Mueller advises using semantic HTML. Though not a ranking factor, it helps search engines understand content and boosts accessibility.

Google’s John Mueller answered a question as to whether the “ARTICLE” semantic HTML element has an impact on Google Search. This is a good question because the use of semantic HTML is ...

Semantic HTML5 provides us with an opportunity to improve our websites and optimize for search engines. We can take full advantage of these opportunities by using machine-readable semantic HTML5 ...

“Making standards is hard work,” writes Tim Berners-Lee in a recent blog post. And he should know. The creator of the World Wide Web, Berners-Lee is responsible for developing and popularizing ...

Search Engine Land's Guide to SEO Chapter 3: HTML Code & Search Engine Ranking Success Factors explains HTML elements & using structured data.