"markup"
This is a special code that helps search engines to better identify information on a website, which leads to its display in more relevant search results
Microdata markup: concepts, applications and benefits
Microdata Markup is one of the most important tools for optimizing web pages, which allows you to structure the site's data in a convenient format. This technology allows search engines to better understand the content of pages and display it in search results more effectively.
Open Graph — is the key to effective website promotion in social networks
Open Graph is a protocol used for marking up web pages to provide a better interaction between users and websites. This protocol allows web developers to set special tags on pages that allow content to be easily displayed on social media and search engines.