TECHNICAL · SEO GLOSSARY
Generative Search
Generative search refers to search engines that use large language models to generate direct, synthesised answers to queries rather than (or in addition to) returning a ranked list of links. Google\'s AI Overviews (formerly Search Generative Experience / SGE), Bing Copilot, and Perplexity AI are examples. Generative search results cite sources — making SEO content strategy relevant for citation eligibility, not just link-rank position.
Definition
Generative search is the application of large language model (LLM) capabilities to the search interface, producing generated prose answers from a synthesis of multiple web sources rather than the traditional ten-blue-links format. **How generative search works at a high level**: (1) the user submits a query; (2) the search engine retrieves candidate documents from its index (the same index that serves traditional results); (3) an LLM reads the retrieved documents and generates a prose response; (4) the generated response cites specific sources with inline citations. The cited sources are typically displayed as links alongside the generated answer. **Implications for SEO**: (a) **Ranking in AI Overviews ≠ ranking in blue links** — a page can appear in an AI Overview citation without ranking in position 1–10 of the traditional results, and can rank in top 10 without being cited. The signals for AI Overview citation eligibility are related to but distinct from traditional ranking signals. (b) **Zero-click risk** — for informational queries, generative search may answer the question fully without the user clicking through to a source. Click-through rates for queries answered by AI Overviews are lower than for traditional results. (c) **Citation eligibility** — the main GEO optimization goal: structuring content so it\'s selected as a citation source in generated answers rather than being "used" (read by the LLM to generate the answer) without citation. (d) **Query type dependency** — generative search is more prevalent for informational and navigational queries; commercial and transactional queries still tend to show traditional results prominently. **Key generative search products** (as of mid-2026): Google AI Overviews (integrated into Google Search); Bing Copilot (integrated into Bing); Perplexity AI (standalone search); ChatGPT search; You.com.
Why it matters for SEO
Generative search is changing the click distribution from search — informational queries that previously drove significant organic traffic are increasingly answered in the search interface without a click. For site owners who monetise through display ads on informational content, this is a revenue threat. For SaaS and service businesses whose informational content builds brand awareness and top-of-funnel traffic, the shift requires adapting content strategy toward citation eligibility rather than just ranking position. Understanding generative search mechanics — which query types trigger AI answers, which sites tend to get cited, and what content structure increases citation probability — is a new SEO capability area.
How DeepSEOAnalysis checks this
The audit checks GEO signals across five criteria: robots.txt AI crawler access (whether GPTBot, ClaudeBot, PerplexityBot, Google-Extended are allowed to crawl the site — blocked AI crawlers can\'t train on or cite the content); llms.txt (whether the site provides an AI-readable content index); FAQPage JSON-LD in server-rendered HTML (question-answer structured data that directly maps to the question-answer format of generated search responses); question-heading ratio ≥20% (H2/H3 headings as questions are more frequently cited as sources for specific query answers); and content chunkability (average section length ≤400 words — shorter, well-defined content chunks are more precisely citeable).
Useful tools and resources
GLOSSARY
Related terms
technical
AI Overviews
Google\'s AI-generated answer panels that appear above traditional blue-link results for many informational and commercial queries — synthesising responses from multiple sources with citations — formerly called Search Generative Experience (SGE) during the 2023–2024 experimental phase.
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GEO Optimization
GEO (Generative Engine Optimization) is the practice of optimising content and technical signals specifically to increase citation and visibility in AI-generated search results — including Google AI Overviews, Perplexity, ChatGPT search, Bing Copilot, and similar generative search products. GEO builds on traditional SEO foundations but adds AI-specific signals: llms.txt, FAQPage structured data, question-heading architecture, and AI crawler access configuration.
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LLM SEO
LLM SEO (Large Language Model SEO) is the practice of optimising content and technical signals to increase the probability that large language models — including AI search engines like Perplexity, ChatGPT search, Claude, and Gemini — cite, reference, or recommend your content in their responses. It overlaps with GEO (Generative Engine Optimization) and is distinct from traditional web SEO because LLMs don\'t rank results the same way search engines do.
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