Encyclopedia / SEO & GEO
Canonical URL
The one official address for a page.
The same page is often reachable at several URLs: with and without a trailing slash, with tracking parameters, or on several domains. rel=canonical tells search engines which one to index and credit, so the copies don't compete with each other.
<link rel="canonical" href="https://ada.example/work/atlas">
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How search engines and AI systems find, read and describe the site.