Q: What is a Schema Markup Language? A: Schema markup language, more accurately referred to as Structured Data or Schema.org, is a type of microdata that helps search engines better understand content on a web page. This type of markup consists of HTML tags that are embedded into the web page's code to communicate to search engines about specific elements of the page, such as the name, author, publisher, etc. The use of a markup language on a page allows search engines to better understand and index the page, leading to improved visibility within organic search results.