Why It Matters
Without schema markup, search engines have to guess what your content represents. They are good at it, but they are not perfect. Schema removes the guesswork. The practical benefit is that pages with schema markup become eligible for rich results. These enhanced search listings take up more space and attract more clicks than standard blue links. A product page showing star ratings and a price in the search results stands out far more than one without. Schema does not guarantee rich results, but without it you are not even in the running. It is particularly valuable for local businesses, e-commerce sites, and service providers who want to stand out in competitive search results. For more on how this connects to broader site performance, see Performance and SEO.
Example
A restaurant adds schema markup to its website identifying its address, opening hours, menu, and customer review scores. Google begins displaying a rich result for the restaurant that includes a star rating, price range, and hours of operation. All of this is visible without the searcher needing to click through. The enhanced listing drives a noticeable increase in bookings.
Schema markup sits within the wider discipline of technical SEO. You can explore related terms in the Glossary.