Structured Data
Machine-readable information embedded in web pages that agents can parse.
Why it matters
Structured data turns your website from a picture into a database for search engines and agents.
In practice
Every page type has structured data: Organization, Product, Service, DefinedTerm, BlogPosting, BreadcrumbList.
Related terms
JSON-LD
A structured data format for web pages. Tells search engines and agents what a page contains.
Schema.org
Structured data vocabulary used by search engines and agents to understand web content.
Semantic HTML
HTML that describes content meaning, not just appearance. Foundation of agent-readable pages.
Dual-Layer Architecture
Page structure where every page serves both humans (visual UI) and agents (structured data, APIs).