Schema markup is often a Exclusive code that may be included on the Websites in a standardized way in order to explain its that means to the desktops. Mainly because it has standardized framework, it truly is also referred to as structured data, and since it usually appears as snippet https://addons.prestashop.com/ru/seo-natural-search-engine-optimization/31857--rich-snippets-json-ld-opengraph-seo.html