Key Terms for AI Search Visibility
A reference guide to the terminology behind Generative Engine Optimization. Whether you are evaluating GEO for your business or working with us on a SignalScore audit, these definitions cover the concepts that matter.
Definitions
GEO Terms Explained
Generative Engine Optimization (GEO)
GEO is the practice of optimizing your digital presence so AI-powered search platforms cite and recommend your business. Unlike traditional SEO, which targets search engine results pages, GEO focuses on how AI systems like ChatGPT, Google AI Overviews, and Perplexity extract, understand, and present your content when answering user questions.
SignalScore
SignalScore is LocalStar Digital's proprietary methodology for evaluating AI search visibility. It assesses six weighted dimensions — Citability, Content Quality/E-E-A-T, Technical, Schema, AI Crawler Access, and Brand & Platform Authority — to produce a structured, repeatable assessment of how visible your business is to AI platforms.
E-E-A-T
E-E-A-T stands for Experience, Expertise, Authoritativeness, and Trustworthiness. It is Google's quality framework for evaluating content, and AI systems use similar signals when deciding which sources to cite. Demonstrating first-hand experience, recognized expertise, authoritative credentials, and trust indicators increases the likelihood that AI platforms will reference your content.
AI Citability
AI Citability measures how easily AI systems can extract and quote your content in their responses. Content with high citability uses answer-first structure, clear passage-level formatting, and specific factual claims that AI models can directly reference. Low citability means your content exists but AI cannot efficiently use it as a source.
llms.txt
llms.txt is a plain-text file placed at your website's root that provides AI crawlers with a structured summary of your site, services, and key information. Similar to how robots.txt communicates with search engine crawlers, llms.txt helps large language models quickly understand what your business does and what content is available.
Answer-First Content
Answer-first content is a writing structure where the direct answer to a question appears in the opening sentence or paragraph, followed by supporting detail. AI systems favor this format because it makes extraction efficient. Instead of burying the answer after lengthy introductions, answer-first content leads with the information users and AI models are looking for.
Schema Markup / JSON-LD
Schema markup is structured data added to your website's code that helps search engines and AI systems understand your content without inference. JSON-LD (JavaScript Object Notation for Linked Data) is the preferred format. Properly implemented schema tells AI exactly what your business type, services, location, hours, and credentials are — reducing misinterpretation.
AI Crawler
An AI crawler is a bot that indexes web content specifically for training or informing AI models. Examples include GPTBot (OpenAI), ClaudeBot (Anthropic), Google-Extended, and PerplexityBot. Unlike traditional search crawlers that index for keyword matching, AI crawlers extract content for comprehension and citation. Blocking them in robots.txt prevents your content from appearing in AI responses.
Core Web Vitals
Core Web Vitals are Google's standardized metrics for measuring user experience: Largest Contentful Paint (loading speed), Interaction to Next Paint (responsiveness), and Cumulative Layout Shift (visual stability). Strong Core Web Vitals improve both traditional search rankings and AI crawl quality, since faster and more stable pages are easier for all crawlers to process.
Local SEO
Local SEO is the practice of optimizing your online presence to attract customers from geographically relevant searches. It includes Google Business Profile optimization, local citation building, NAP (Name, Address, Phone) consistency, and location-specific content. Local SEO provides the foundational signals that AI platforms also use when making location-based recommendations.
Google Business Profile
Google Business Profile (formerly Google My Business) is a free listing that controls how your business appears in Google Search and Maps. A complete, optimized profile with accurate hours, services, photos, and reviews is a critical signal for both traditional local search and AI-powered recommendations. AI systems frequently reference GBP data when answering local queries.
Semantic Search
Semantic search is a search approach that interprets user intent and contextual meaning rather than matching exact keywords. Both modern search engines and AI platforms use semantic understanding to connect queries with relevant content. Optimizing for semantic search means creating comprehensive, topically structured content that addresses underlying questions rather than just target keywords.
AI Overview (Google)
AI Overviews are AI-generated summaries that appear at the top of Google search results, providing direct answers before traditional links. They synthesize information from multiple web sources, often reducing click-through to individual websites. Businesses optimized for AI citability are more likely to be sourced in these overviews, maintaining visibility even as clicks decline.
See These Concepts
Applied to Your Business
Book a SignalScore audit and we will evaluate your AI visibility across every dimension covered in this glossary.
Get Your SignalScore Audit