- AEO (Answer Engine Optimization) (noun · strategy)
- Structuring content in question-and-answer form so featured snippets, AI Overviews, voice assistants and AI chats select it as the direct answer to a question. AEO services[2]
- AI crawlers (noun · technical)
- User agents AI companies use to crawl the web: training bots (GPTBot, ClaudeBot), search/citation bots (OAI-SearchBot, Claude-SearchBot, PerplexityBot) and user-initiated bots (ChatGPT-User, Claude-User). AI crawler guide
- AI Mode (noun · Google)
- The conversational AI experience inside Google Search. It breaks complex questions into sub-questions, runs several searches (query fan-out) and answers with source links[3].
- AI Overviews (noun · Google)
- AI-generated summary answers with supporting links shown at the top of Google’s results page. Sources are chosen from Google’s index. Gemini & AI Overviews[3]
- AI SEO (noun · umbrella term)
- A general name for search optimization in the AI era; depending on context it can mean GEO, AEO or SEO done with AI tools.
- AIO (abbreviation)
- Used in two senses: “AI Optimization” or Google’s “AI Overviews” feature. Proposals and reports should make clear which one is meant.
- Citation share (noun · metric)
- The ratio of AI answers naming the brand to all answers for a fixed question set. Example: named in 45 of 300 answers = 15% citation share. Measurement guide
- E-E-A-T (abbreviation · quality)
- Experience, Expertise, Authoritativeness, Trustworthiness: the framework in Google’s quality rater guidelines[11].
- Entity (noun · infrastructure)
- A distinct “thing” — brand, person, place or concept — that search engines and language models recognize as separate from others. Entity SEO
- Featured snippet (noun · Google)
- A short block of text Google quotes from a page above the results as the answer to a question; the classic AEO target[2].
- GEO (Generative Engine Optimization) (noun · strategy)
- Content, technical and reputation work that gets a brand mentioned, cited and correctly represented in the answers of generative AI engines such as ChatGPT, Gemini, Perplexity, Claude, Copilot and DeepSeek. What is GEO?[1]
- Google-Extended (noun · robots.txt)
- A robots.txt token that lets sites control whether content Google crawls may be used for training Gemini models and grounding in Gemini apps. It doesn’t affect inclusion or ranking in Google Search[5].
- Grounding (noun · technical)
- Basing an AI answer on current sources (web pages, documents) retrieved at answer time. Grounded answers usually include source links.
- Hallucination (noun · risk)
- A language model confidently producing information that isn’t true. For brands it most often shows as a wrong address, price or service; reduced by fixing sources and keeping entity data consistent.
- IndexNow (noun · protocol)
- An open protocol for instantly notifying search engines (Bing, Yandex, etc.) of new or changed URLs. Helps keep Bing’s index — which Copilot relies on — current[7].
- Knowledge graph (noun · infrastructure)
- A structured network of entities (people, organizations, places, concepts) and their relationships. Search engines and AI systems use such graphs to recognize brands.
- LLM (large language model) (noun · technical)
- An AI model trained on large amounts of text that understands and generates language; GPT, Gemini, Claude and DeepSeek are examples.
- LLMO (Large Language Model Optimization) (noun · strategy)
- Work aimed at large language models recognizing and describing a brand correctly: consistent entity data, accurate definitions in trusted sources and fixing wrong information at its source.
- llms.txt (noun · file)
- A file proposed in 2024 for presenting a site’s most important pages to language models as a short Markdown list. Not an official standard; Google states it isn’t needed for AI Overviews. llms.txt guide[8]
- Neural visibility (noun · Vextoo term)
- How much a brand is mentioned, recommended and correctly represented in AI engine answers. Vextoo Geo Agency measures it with citation share, recommendation position, sentiment score and source coverage.
- Neural Visibility Loop (noun · Vextoo method)
- Vextoo Geo Agency’s four-step method: SCAN (audit), BUILD (bot access, schema, entity), WRITE (citable content and authority), MEASURE (monthly citation share and correction). Details
- OAI-SearchBot (noun · crawler)
- The crawler OpenAI uses to surface sites in ChatGPT search results. Per OpenAI, sites that opt out of it are not shown in ChatGPT search answers. ChatGPT file[6]
- Query fan-out (noun · technical)
- Splitting a question into subtopics, running multiple related searches and merging the results into one answer. Google says AI Overviews and AI Mode may use this technique[3].
- Question set (noun · measurement)
- A fixed sample of the questions customers ask AI, used for regular measurement. Visibility is measured monthly with the same set.
- RAG (retrieval-augmented generation) (noun · technical)
- The model retrieves relevant documents before generating and grounds its answer in them. The core architecture of AI search.
- Recommendation position (noun · metric)
- The brand’s average position in list-style AI answers (“the 5 best …”).
- sameAs (property · schema.org)
- A structured-data property linking an entity to its official external profiles (LinkedIn, Instagram, Wikidata, Google Business Profile, etc.), helping verify the entity[9].
- Schema.org / structured data (noun · technical)
- Marking up page content with a shared vocabulary machines can interpret precisely, usually as JSON-LD. Schema guide[9]
- Sentiment score (noun · metric)
- Classification of how AI answers describe the brand: positive, neutral, negative or wrong. Wrong information is tracked separately.
- Source coverage (noun · metric)
- The number and type of your URLs cited as sources in AI answers. Shows which pages actually work.
- Zero-click search (noun · market)
- A search where the user leaves without clicking any result. Per SparkToro, 68.01% of US Google searches in the first four months of 2026 ended without a click. Zero-click guide[10]