Schema Markup / SEO Terms SEO Schema Markup Schema markup is a type of structured data added to the HTML of a webpage to help search engines better understand the content and context of that page. It uses a shared vocabulary from Schema.org to label elements such as products, reviews, events, recipes, and more. When implemented correctly, schema markup can enhance search listings with rich results like star ratings, pricing, availability, or breadcrumbs. This added detail improves visibility and click-through rates by making listings more informative and engaging. Schema markup is an important SEO tool for improving how content appears in search results and ensuring it aligns with user intent.