Schema markup is structured data added to web pages using the Schema.org vocabulary. It tells search engines and AI agents what type of content the page contains (article, product, FAQ, organization) and the key facts about it. Schema markup is one of the highest-leverage AEO investments because it gives answer engines exactly the metadata they need to cite the content accurately.
The preferred format is JSON-LD, a script tag placed in the page head or body containing JSON-formatted Schema.org data. Google and AI agents prefer JSON-LD over older formats like Microdata and RDFa because it does not require interleaving markup with visible content.
Organization, WebSite (with SearchAction), Article (with full author and date attribution), FAQPage, BreadcrumbList, Product, LocalBusiness and Service. The combination of Organization + WebSite + page-specific schema is the AEO foundation.
Generate JSON-LD blocks per page type and embed in the HTML head. Spacemen Digital ships schema directly into client codebases as part of every AEO retainer. The free Readiness Check audits high-value schema types.
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