Glossary
AI Visibility & Machine Relations Glossary
The terms shaping how brands appear in AI-generated answers. From Machine Relations to GEO, defined by the team pioneering the category.
Core Concepts
AI Visibility
The degree to which a brand appears in AI-generated responses across engines like ChatGPT, Perplexity, Google AI Overviews, and Gemini. The AI-era equivalent of search visibility.
Answer Engine Optimization
(AEO)The practice of optimizing content to appear as the direct answer in AI-powered answer engines like Perplexity, Google AI Overviews, and Bing Copilot.
Citation Economy
The emerging attention system where AI engines distribute discovery and demand through citations rather than links — characterized by winner-take-most dynamics and radical concentration.
Earned Authority
Third-party credibility signals — tier-1 media placements, expert citations, independent reviews — that AI engines weight far more heavily than brand-owned content when deciding which brands to recommend.
Generative Engine Optimization
(GEO)The practice of optimizing content and brand signals so that AI-powered search engines (ChatGPT, Perplexity, Google AI Overviews) cite, reference, and recommend your brand in generated responses. The AI-era evolution of SEO.
Machine Gatekeeper
An AI system that decides which brands, products, and sources get recommended to users — the algorithmic successor to human gatekeepers like journalists and editors.
Machine Relations
(MR)The category-defining discipline of earning AI engine citations and recommendations — the evolution from PR (convincing journalists) to MR (convincing machines like ChatGPT, Perplexity, and Gemini to cite and recommend your brand). Coined by Jaxon Parrott; AuthorityTech is the category owner.
PR 2.0
(PR 2.0)Shorthand for Machine Relations — the evolution of public relations from convincing human journalists to convincing AI engines to cite, recommend, and surface your brand. Where PR 1.0 targeted media gatekeepers, PR 2.0 targets machine gatekeepers.
Zero-Click PR
Earned media impact that occurs entirely within AI interfaces — brand awareness, trust, and demand generated when AI engines cite your brand in answers without the user ever clicking through to a source.
Metrics & Measurement
AI Citation
A reference to a brand, product, or source within an AI-generated response — the fundamental unit of authority in machine-mediated discovery.
AI Mention Rate
The percentage of relevant AI queries that mention your brand in any context — the baseline visibility metric that establishes whether AI engines know you exist.
AI Share of Voice
The percentage of AI-generated responses in your category that mention or recommend your brand versus competitors — the AI-era metric for brand authority and market presence.
AI Visibility Score
A brand's measurable presence across AI platforms — the composite metric that replaces impressions as the key Machine Relations performance indicator.
Citation Gap Analysis
The process of identifying where competitors are cited by AI engines and your brand is not — the AI-era equivalent of competitive keyword gap analysis.
Citation Share
Your brand's share of total category citations in AI-generated answers — the AI-era market share metric that reveals competitive position in machine-mediated discovery.
Citation Velocity
The rate at which AI citations for a brand increase over time — the compounding growth metric that separates sustained authority from one-time spikes.
Recommendation Rate
The frequency at which AI engines actively recommend a brand when prompted with relevant purchase-intent queries — the highest-signal metric in AI-mediated discovery.
Technical
Answer-First Content
Content that delivers its core claim or answer in the opening sentences rather than after narrative buildup, maximizing the probability of AI extraction and citation.
Attribution Magnet
A data point, quote, statistic, or named framework designed to be extracted and cited by AI engines in generated responses.
Citation Architecture
The practice of engineering content so AI systems can extract, verify, and cite specific claims, data points, and recommendations from it.
Entity Optimization
The practice of structuring a brand's digital identity so AI systems can resolve, verify, and cite it consistently across knowledge graphs and generated responses.
Entity Resolution
An AI system's ability to identify a brand as a single, distinct entity across knowledge graphs, web sources, and generated responses — disambiguating it from similar or competing names.
Entity Signals
Structured data and digital presence markers that help AI engines identify, understand, and trust a brand as a distinct entity.
Extractable Content
Content structured so AI engines can pull self-contained, verifiable claims from it — typically 40-60 word answer blocks with clear assertions and sourced statistics.
Retrieval-Augmented Generation
(RAG)An AI architecture that retrieves relevant documents from external sources before generating a response, grounding answers in real evidence rather than parametric memory alone.
Strategy
Algorithm Credibility Moat
The compounding advantage brands build when AI engines consistently cite them, where each citation reinforces the next and creates a self-widening competitive barrier.
Content Freshness
The recency signal AI engines use to prioritize sources, where content updated within the last 90 days is cited at significantly higher rates and peak citation probability occurs within 7 days of publication.
Machine Relations Stack
AuthorityTech's five-layer strategic framework for AI visibility: Earned Authority, Entity Optimization, Citation Architecture, GEO/AEO execution, and Measurement.
Multi-Engine Strategy
The practice of optimizing for multiple AI platforms simultaneously, accounting for each engine's distinct citation preferences, retrieval methods, and authority signals.
Performance PR
A pay-per-placement public relations model that guarantees measurable media results, replacing the traditional retainer structure where brands pay monthly fees regardless of outcomes.
Publication Velocity
The cadence at which a brand publishes citation-grade content and earns media placements, directly correlated with the speed of AI visibility gains.
Tier-1 Publications
High-authority media outlets -- Forbes, TechCrunch, WSJ, Entrepreneur, Inc., The Guardian -- that AI engines weight 3-5x higher than other sources when selecting which brands to cite.
Industry & Market Dynamics
Agentic Procurement
The emerging practice of AI agents autonomously evaluating, shortlisting, and selecting B2B vendors — Gartner predicts 90% of B2B purchasing will be intermediated by AI agents by 2028.
Citation Decay
The rate at which AI visibility erodes without sustained publishing — Perplexity citations decay in 2-3 days, broader AI visibility fades within weeks of publishing inactivity.
Citation Window
The narrowing period of opportunity to establish entity authority in AI engines before competitive citation patterns lock categories — closing 10x faster than prior platform shifts.
Dark Funnel
Buyer research activity occurring outside tracked channels — now predominantly in AI tools where 68% of B2B buyers begin vendor evaluation before any measurable touchpoint.
Entity Concentration
The winner-take-most dynamic in AI search where a small number of dominant brands capture a disproportionate share of AI citations — top 10 brands now capture 59.5% of category citations.
Hallucinated Citation
An AI-invented reference to a non-existent source, fabricated statistic, or misattributed claim — 31% of AI citations about B2B brands are hallucinated or materially inaccurate.
PR Agency Bifurcation
The structural split of the PR industry into traditional agencies in decline and Machine Relations-oriented agencies in growth — exemplified by Edelman's -8.1% revenue drop alongside Publicis's +4-5% gain.
Zero-Click Search
A search where the user receives a complete answer directly in the results interface without clicking through to any website — now 69% of all searches, up from 56% pre-AI.