Schema markup is a simple code added to your pages to explain the meaning of your content. Search engines read this code to understand things like product information, reviews, prices, articles, or events. When a page has clear schema, Google may show extra details in search results, which can pull more attention. Many people add schema using plugins or online tools that create the code for them. It does not change how the page looks to visitors but helps search engines read it better. Have you noticed those rich search results that show ratings or extra details?