Schema markup matters because it turns plain text into clearly defined facts. A search engine reading properly labeled markup knows which number is a price, which name is an author, and which text answers a question. That clarity powers rich results in search and makes your pages easier for answer engines to quote accurately.
Think of schema markup as the specific vocabulary layer that implements structured data. Applying the right types consistently is a core part of being understood by machines. Learn more in the AEO guide. Back to the SEO & AEO glossary.
FAQ
What format should schema markup use?
JSON-LD is the recommended format. It sits in a script tag in your page's HTML, keeps markup separate from visible content, and is the format search engines and AI systems parse most reliably. Older formats like Microdata and RDFa still work but are harder to maintain.
Which schema types should I add first?
Start with the types that match your content: Article or BlogPosting for posts, Product for shop pages, Organization and WebSite sitewide, and FAQPage for question-and-answer sections. Prioritize types that describe your most important pages and that engines actively use for rich results.
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