In Brief
Structured data vocabulary that helps search engines understand webpage content and context.
Schema markup (from schema.org) is a standardized vocabulary for structuring data on web pages. It helps search engines understand content meaning, not just keywords. Common schemas include Article, FAQPage, HowTo, Product, LocalBusiness, Person, and Organization. Proper schema implementation can enable rich results like star ratings, FAQs, and how-to steps in search results.