Schema markup is structured data added to a page to help search engines understand what the page is about.

Structured data is information formatted in a machine-readable way so search engines can interpret page content more clearly.

Schema.org is the shared vocabulary used to describe content types, entities, and relationships in structured data.

JSON-LD is a common format for adding structured data to a page without wrapping it around visible content.

Rich results are enhanced search listings that can show extra information like ratings, prices, breadcrumbs, or images.

Rich snippets are search results that display extra details beyond the standard result, such as stars, pricing, or breadcrumbs.