Schema Markup is a type of structured data code that you add to your website s HTML to help search engines better understand the content on your pages. By using standardized vocabulary from Schema.org, schema markup enables search engines to interpret information such as articles, products, reviews, and events more accurately. This enhanced understanding can improve how your pages appear in search results, often leading to rich snippets such as star ratings, event dates, or product information that can increase visibility and click-through rates.