📖 Glossary of Terms

GEO & AI Visibility
Glossary of Terms

Clear, plain-language definitions of terms commonly encountered in Generative Engine Optimization, structured data, and AI search.

A B C D E F G H İ J K L M N O P R S Ş T U V W Y Z
A

AEO

Answer Engine Optimization
#

Optimization aimed at increasing the odds of being cited in systems where users get a direct answer to a question (Google's featured snippets, AI assistants). Considered a precursor to GEO; GEO extends AEO for generative AI models.

areaServed

Schema.org areaServed property
#

A Schema.org property that specifies which geographic regions a business serves. Can take values like "Istanbul Anatolian Side" or "Nationwide". Enables geographic matching in local AI searches.

AI Crawler

AI / LLM Web Crawler
#

Bots such as GPTBot (OpenAI), ClaudeBot (Anthropic), PerplexityBot, and Google-Extended that crawl web pages for LLM training or RAG. If not allowed in robots.txt, these bots can't access your site.

B
E

Entity

Knowledge Graph Entity
#

A concept used by AI and search engines to identify a real-world object (a business, person, or place). "Ahmet's Bakery" is an entity. NAP consistency and Schema.org reinforce this entity's unique identity.

F

FAQPage Schema

Schema.org FAQPage
#

A Schema.org type used to mark up question-answer pairs on a page. ChatGPT and Gemini use this structure directly as a citation source. At least 5 Q&A pairs are recommended.

G

GEO

Generative Engine Optimization
#

Optimization work aimed at getting generative AI systems like ChatGPT, Gemini, Copilot, and Perplexity to recommend a business, product, or piece of content to users. Schema.org, llms.txt, FAQPage, and NAP consistency are the core tools.

A core GEO concept
Learn more →

GBP

Google Business Profile
#

Google Business Profile. The profile page that shows your business on Google Maps and local search results. Gemini refers directly to GBP data when answering local GEO queries. Photos, hours, services, and description fields should all be filled out completely.

İ

IndexNow

IndexNow Protocol
#

An open protocol that instantly notifies Bing, Yandex, and other search engines of content changes. Once notified, search engines prioritize crawling the page. Since ChatGPT is believed to use Bing's index, IndexNow has a direct GEO impact.

J

JSON-LD

JavaScript Object Notation for Linked Data
#

A format used to embed Schema.org structured data in an HTML page via a <script type="application/ld+json"> tag. The method preferred by Google and AI engines over alternatives like Microdata or RDFa. Can be added without changing the page's visible content.

K

Knowledge Graph

Knowledge Graph
#

Google's database that stores real-world entities (people, businesses, places, concepts) and the relationships between them. Businesses marked up with Schema.org become more eligible to enter the Knowledge Graph, and AI models reference this graph.

L

LLM

Large Language Model
#

A large language model trained on billions of parameters, such as ChatGPT (GPT-4o), Google Gemini, Claude, or Llama. GEO's ultimate goal is for these models to learn your business as a trustworthy source.

llms.txt

LLM-readable site summary
#

A plain-text file published at /llms.txt that gives large language models a summary of a website's content. The functional equivalent of robots.txt for LLM crawlers. Should include category, services, key pages, and contact information.

LocalBusiness Schema

Schema.org LocalBusiness
#

A Schema.org type used to describe local businesses with a physical address. Includes information like name, address, phone, hours, description, and service area. Breaks down into subtypes such as Restaurant, MedicalClinic, and LegalService.

N

NAP

Name, Address, Phone
#

The principle of keeping a business's name, address, and phone number identical, letter for letter, across Google, your website, social media, and all directories. NAP inconsistency prevents AI engines from determining which information is correct, reducing visibility.

A core GEO concept
Learn more →
P

Perplexity

Perplexity AI
#

An AI search engine that performs real-time web crawling and cites a source for every answer. Uses a RAG architecture; pages with Schema.org and llms.txt are more likely to be shown as sources.

R

RAG

Retrieval-Augmented Generation
#

An architecture where LLMs supplement their knowledge by searching current web sources (or a vector database) before generating an answer. ChatGPT's web search and Perplexity both use this method. Structured, citable content stands out in RAG.

robots.txt

robots.txt File
#

A text file that tells web crawlers which pages they can and can't access. Without an Allow rule for GPTBot, ClaudeBot, PerplexityBot, or Google-Extended, these AI crawlers can't index your site.

S

Schema.org

Schema.org Structured Data Standards
#

A collection of structured data standards jointly created by Google, Microsoft, Yahoo, and Yandex. Makes web content machine-readable. Includes hundreds of types like LocalBusiness, FAQPage, BreadcrumbList, and Article. This is the technical foundation of GEO.

A core GEO concept
Learn more →

Sitemap.xml

XML Sitemap
#

An XML file listing all pages on a website along with their last-updated dates. When submitted to Google Search Console and Bing Webmaster Tools, it speeds up page indexing, indirectly supporting AI visibility.

Semantic Search

Semantic Search
#

Search technology that understands user intent and the relationships between concepts instead of matching keywords. All modern AI and search engines use semantic search; topical coherence and entity clarity in content are critical in these systems.

T

Topical Authority

Topical Authority
#

A website becoming the go-to reference source on a topic in the eyes of AI and search engines by offering deep, trustworthy content in that subject area. Built through comprehensive blog content, FAQ pages, and internal linking.

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