Structured info is included straight to a page's HTML markup. Search engines like google use structured facts to make rich snippets, that are little parts of knowledge that should then show up in search results. Google delivers a free Software termed Structured Data Markup Helper that helps with producing the appropriate markup https://addons.prestashop.com/pt/seo-referenciamento-natural/31857-rich-snippets-automaticos-json-ld-opengraph-seo.html