Schema markup
Also: JSON-LD, structured data
Structured-data annotation (typically JSON-LD) that describes a page's entities, types, and relationships for search engines. The vocabulary is defined by Schema.org and consumed by Google, Bing, and the retrieval pipelines behind AI search engines.
Related terms
- Entity graph
A network of named entities (people, organizations, products, concepts) and their relationships, as represented by a search engine or AI system. Built from structured data, sameAs cross-references, and corpus co-occurrence.
- Generative Engine Optimization
The practice of structuring web content so generative AI engines (ChatGPT, Perplexity, Claude, Gemini) preferentially cite it when answering user queries. Distinct from traditional SEO, which optimizes for ranked links rather than cited passages.
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