We are in an era where digital marketing moves fast. New tactics, evolving channels, and an entirely new way that buyers find information online. This glossary cuts through the noise with clear, commercially grounded definitions for the terms that actually matter. Created for Irish business owners and marketing leaders who need clarity, not jargon.
Schedule Consultation Our Work
The terms shaping how content is discovered, cited, and surfaced by AI-powered tools including ChatGPT, Google AI Overviews, Perplexity, and voice assistants.
The practice of structuring content so it is selected by AI-powered answer engines and voice assistants as a direct response to a query. Unlike traditional SEO, which earns a position in a list of results, AEO is about becoming the answer itself. For Irish businesses, this matters most at the research stage where buyers increasingly use AI tools to identify and evaluate potential partners.
The practice of optimising content to appear within AI-generated responses from tools like ChatGPT, Perplexity, and Google AI Overviews. Where AEO focuses on being selected as a direct answer, GEO is broader, covering how your brand and content appear across the full output of generative AI tools including narrative mentions, comparisons, and recommendation lists.
The AI-generated summaries that appear at the top of Google search results, pulling from multiple sources to provide a direct answer before the traditional list of results. For businesses, appearing as a cited source within an AI Overview is one of the highest-visibility positions available in modern search, often appearing above all organic rankings.
A search interaction where the user gets their answer directly on the results page without clicking through to any website. Zero-click results include AI Overviews, featured snippets, and knowledge panels. As zero-click behaviour grows, visibility in the answer itself becomes more commercially valuable than a traditional ranking alone.
An approach to search optimisation that focuses on clearly defining the people, places, organisations, and concepts associated with a business so that search engines and AI systems can understand relationships between them. Entity-based SEO underpins both traditional search rankings and AI citation, as large language models rely on clear entity signals to identify credible sources.
The ability of search engines to understand the intent and contextual meaning behind a query rather than matching keywords literally. Semantic search means a page optimised around a topic and its related concepts will perform better than one that simply repeats a target keyword, making content depth and topical coverage increasingly important.
A type of AI system trained on large volumes of text data that can understand and generate human language at scale. ChatGPT, Google Gemini, and Claude are all built on large language models. Understanding how LLMs select and cite content is central to both AEO and GEO strategy, as these models have different selection criteria to traditional search algorithms.
A method used by AI systems to retrieve relevant information from external sources before generating a response, rather than relying solely on what the model was trained on. For businesses, RAG is relevant because it means AI tools are actively pulling from live web content when forming answers, making well-structured, authoritative, and up-to-date content more likely to be selected and cited.
The foundational discipline of making your website visible, credible, and rankable in search engines. These are the core terms that underpin every search strategy, from technical site health to content architecture and link building.
The degree to which a website is recognised by search engines as a credible and comprehensive source on a given subject. Topical authority is built through depth of coverage across a topic rather than keyword density alone. A site that covers a subject thoroughly, with multiple interlinked pages addressing related questions, signals greater expertise than one with a single optimised page.
A content architecture model where a central pillar page covers a broad topic and links to a set of supporting cluster pages that address specific subtopics in depth. Topic clusters help search engines understand the relationship between pieces of content and reinforce topical authority across an entire subject area rather than for individual pages in isolation.
A comprehensive page that covers a broad topic at a high level and serves as the central hub for a topic cluster. A pillar page links out to more detailed cluster pages on related subtopics, and those cluster pages link back to it. Together they create a content structure that signals depth and authority to search engines across an entire subject area.
A metric that indicates how likely a website is to rank well in search engine results, based primarily on the quality and quantity of other websites linking to it. Domain authority is not an official Google metric but is widely used as a proxy for a site’s overall credibility and competitive strength in search. Building domain authority requires earning links from reputable, relevant external sources over time.
The foundation layer of search optimisation, covering the structural and performance elements of a website that determine whether search engines can access, crawl, and index its content correctly. Technical SEO includes site speed, mobile responsiveness, URL structure, crawl budget, duplicate content, and core web vitals. Without a sound technical foundation, even the strongest content strategy will underperform in search.
The ability of search engine bots to access and navigate the pages of a website. A site with poor crawlability may have pages that are blocked by robots.txt settings, buried behind too many internal links, or inaccessible due to technical errors. If a search engine cannot crawl a page, it cannot index or rank it regardless of how good the content is.
The process by which search engines store and catalogue a web page in their database after crawling it, making it eligible to appear in search results. A page that is crawled but not indexed will not rank for any query. Indexation can be controlled through meta robots tags, canonical tags, and Google Search Console, and should be audited regularly to ensure the right pages are being indexed and the wrong ones are not.
Structured data added to a web page in a standardised format that helps search engines and AI systems understand the content and context of that page beyond what they can interpret from the text alone. Schema markup powers rich results in Google search, such as FAQ dropdowns, review stars, and event listings, and is increasingly important for AI citation as it provides machine-readable signals about the type, author, and subject of a page.
The practice of linking between pages within the same website to help both users and search engines navigate content and understand the relationships between topics. A strong internal linking structure distributes authority across the site, supports crawlability, and reinforces topical clusters by connecting related pages. It is one of the most underused and highest-return technical SEO activities available without any external dependency.
A link from one website to another. Backlinks remain one of the most significant ranking signals in search, as they act as a vote of confidence from one site to another. Not all backlinks carry equal weight. A link from a high-authority, relevant website in your industry is considerably more valuable than one from a low-quality or unrelated source. Earning quality backlinks typically requires strong content, digital PR, or partnership activity.
A selected search result that appears above the standard list of results in a box at the top of the Google search page, providing a direct answer to the user’s query. Featured snippets typically pull a concise definition, list, or table from a well-structured page. Earning a featured snippet for a relevant query significantly increases visibility and is one of the clearest crossover points between traditional SEO and AEO strategy.
The underlying goal or motivation behind a search query. Search intent is typically categorised as informational (the user wants to learn something), navigational (the user wants to find a specific site), commercial (the user is researching before a purchase decision), or transactional (the user is ready to take action). Aligning page content with the correct search intent for a target keyword is one of the most important factors in determining whether a page ranks and converts.
An acronym used by Google standing for Experience, Expertise, Authoritativeness, and Trustworthiness. E-E-A-T is the framework Google’s quality raters use to assess whether a piece of content is genuinely useful and credible, particularly for topics where accuracy matters such as health, finance, and legal advice. For businesses, demonstrating E-E-A-T means having content written or reviewed by credible people, citing reliable sources, maintaining an accurate and professional website, and building a strong reputation through external mentions and reviews. It is not a direct ranking factor but strongly influences how Google evaluates content quality overall.
