What Does LLM SEO Mean?

LLM SEO means optimising your content so large language models, the technology behind tools like ChatGPT, Gemini, and Perplexity, mention or cite your business when people ask them questions. Instead of only trying to rank in Google's traditional results, you are trying to become a source these AI systems trust and quote. In practice it overlaps heavily with good SEO: clear, factual, well-structured content, strong topical authority, and genuine trust signals all make your site more likely to be used in an AI answer. The difference is the target. You are optimising for a machine that summarises and cites rather than one that lists links. It is a newer layer on top of solid SEO fundamentals, not a replacement for them.