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Glossary5 min read

SEO & GEO glossary: every term explained simply

SERP, backlink, AI citation, llms.txt, share of voice… the terms of SEO and GEO worth knowing, explained simply.

SEO
Search Engine Optimization: optimising a website to appear higher in search engine results.
GEO
Generative Engine Optimization: optimising your presence in the answers produced by generative AI (ChatGPT, Gemini, Perplexity, Claude).
SERP
Search Engine Results Page: the page of results displayed after a search.
Ranking
A page’s position in the results for a given keyword. Position 1 is at the very top.
Share of voice
The share of visibility you hold across a set of keywords, compared with your competitors.
Backlink
A link from another website to yours. Their quality matters more than their number.
Search intent
What the person really wants: to learn, compare, buy or find an address.
Long-tail keyword
A more precise, longer, less frequent search that is often more qualified.
Indexing
A search engine storing a page, which is required before it can appear.
Title tag
A page’s title, shown in results. It influences ranking and click-through rate.
Structured data
Markup (schema.org) that tells Google and AI what a page is: product, address, review, question and answer.
AI citation
A mention of your site, with or without a link, in an AI engine’s answer.
Brand mention
Your name cited in an AI answer, even without a link to your site.
AI Overview
The AI-generated summary shown at the top of some Google results pages.
llms.txt
A file at the root of a website that presents its content clearly to language models.
AI crawlers
The robots AI companies use to read websites. Your robots.txt file decides whether they may read yours.
Google Business Profile
Google’s business listing: address, hours, reviews, photos. The foundation of local SEO.
Click-through rate (CTR)
The percentage of people who click your result after seeing it.

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