It is the work of making your brand recognised and referenced by large language models such as ChatGPT, Gemini, Perplexity and Copilot, and by Google’s AI Overviews. You will also see it called LLM optimisation, answer engine optimisation (AEO) or generative engine optimisation (GEO): they all describe the same job. Structured content, entity authority and citation tracking, across every major model.