Code added to a page that tells search engines what it is about in a machine-readable way — that this is a service, this is the price, this is the business, this is the author.
Search engines read your page as text and infer meaning. Structured data removes the inference: instead of guessing that a string of digits is a phone number, it is told so explicitly.
It also feeds the systems that increasingly answer questions without sending a click — AI summaries and knowledge panels are assembled from entities, and structured data is how you describe yours.
| Organization / LocalBusiness | Every page | Ties the site to the business entity |
|---|---|---|
| Service | Each service page | Says what the page is, not just what it says |
| BreadcrumbList | Every page | Shows the path in search results |
| BlogPosting | Each article | Author and dates |
| FAQPage | Where you have Q&A | Machine understanding — no rich result since 2023 |
This comes up most often in Technical SEO & Site Speed. Crawling, indexing, speed, structured data and site architecture — the plumbing that decides whether your pages can compete.
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