GEO (Generative Engine Optimisation)The practice of structuring and sourcing content so that generative AI systems, including ChatGPT and Perplexity, select it as a cited source when answering user queries about Cardiff trades.AEO (Answer Engine Optimisation)Optimising content to appear as the direct answer in AI Overview boxes and answer-engine interfaces, ahead of traditional organic results, for relevant Cardiff trade queries.AI citationThe act of an AI assistant naming or referencing a specific business or piece of content in its answer to a user query. For Cardiff trades, being cited in an AI answer is a pre-click visibility advantage.Retrieval-augmented generationThe AI architecture by which systems like ChatGPT retrieve external sources and incorporate them into their answers. Content that is well-structured, entity-clear and factually grounded is more likely to be retrieved and cited.Entity clarityThe degree to which a website clearly signals to AI and search systems who the business is, what trade category it belongs to, where it operates and what specialist expertise it holds. Ambiguous entities are cited less frequently.Citable contentContent that is specific, verifiable, well-sourced and structured in a way that allows an AI system to accurately extract and attribute it in a generated answer. Verifiable Welsh regulatory references are an example of high-value citable content for Cardiff trades.