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Schema.org is a shared vocabulary used to mark up a web page's content as structured data, so search engines can understand it more easily. Launched in 2011 by Google, Microsoft, Yahoo and Yandex, it is now developed through an open community process. Implemented as JSON-LD, schema markup can make a page eligible for rich results and helps machines resolve ambiguity about what a page covers. It is one of the technical pillars of SEO and AEO that Mazette.co works on systematically for its clients' sites.
A page describes itself in human language; structured data says the same thing in machine language: this is an article, written by this person, published on this date by this organization. It does two jobs. It removes ambiguity (Google says Organization markup helps it disambiguate your organization in search results), and it can make a page eligible for a rich result. Eligible does not mean shown: Google states that using structured data does not guarantee the feature will be present (Google Search Central, checked in October 2026).
Google's search gallery lists 25 structured data features as of October 2026, including Article, Breadcrumb, Event, Job posting, Local business, Organization, Product, Recipe, Review snippet and Video. The list keeps shrinking: according to the changelog of Google's documentation, the FAQ rich result stopped appearing in Google Search on May 7, 2026. FAQ markup no longer earns an enhanced listing in Google. Mark up what helps readers and crawlers, not what promises a display.
For AI Overviews and AI Mode, Google states that no special Schema.org structured data needs to be added, and that no new machine-readable files, AI text files or markup are required. Its guidance is to make sure your structured data matches the visible text on the page (Google Search Central, "AI features and your website", checked in October 2026). Schema markup is no shortcut to being cited. It supports clear content by sparing machines the guesswork.
Google recommends JSON-LD whenever your setup allows it, placed in a script tag in the head or body of the page. Mark up only what is really on the page, type by type: Organization, Article, BreadcrumbList, Product, depending on the content. Then test with Google's Rich Results Test and the Schema Markup Validator, and keep an eye on errors in Search Console; our Schema Validator page presents that validator. Schema.org itself is at version 30.1 (September 16, 2026) and reports over 45 million web domains using it as of 2024. To go further, read our definitions of SEO and AEO, or see our SEO expertise.
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Yes, but with realistic expectations. Structured data helps machines resolve ambiguity about a page, yet it does not guarantee a rich result: Google stopped showing the FAQ rich result on May 7, 2026, and says AI Overviews need no special schema.
Test the page with Google’s Rich Results Test and the Schema Markup Validator, then watch for errors in Search Console. Make sure the markup matches the text visible on the page.
