SEO vs GEO: What's the Difference and Why You Need Both

If you've spent the last decade mastering SEO — building links, optimising pages, climbing the rankings — you might wonder whether GEO is just more of the same with a shinier name.

It's not. But it's not completely separate either.

What SEO actually does

Search Engine Optimisation is the practice of making your website more likely to appear in Google search results for queries relevant to your business. It works by sending signals to search engine crawlers: relevant keywords, quality backlinks, fast page load times, structured HTML, mobile responsiveness.

What GEO does instead

Generative Engine Optimisation is the practice of making your brand more likely to be mentioned, cited, or recommended in AI-generated answers. When someone asks ChatGPT “who are the best accountants in Birmingham?”, the model doesn't crawl the web in real time and rank pages. It generates an answer based on what it knows — which brands are clearly defined, well-referenced, and associated with trustworthy content.

Where SEO and GEO overlap

Good SEO creates a foundation that GEO builds on. Specifically:

• Strong rankings help retrieval-augmented AI. Perplexity and Bing Copilot search the live web. If you rank well for relevant queries, your pages get retrieved and cited.
• Technical SEO hygiene helps AI crawlers too. Fast, clean, crawlable HTML with good structured data is good for both Google and AI engines.
• Quality content is foundational to both. Authoritative, well-written content that directly answers questions performs well in traditional search and is more likely to be cited in AI answers.

Where they diverge

• Keywords vs intent. SEO is keyword-driven at its core. GEO is entirely about topical relevance and entity authority.
• Backlinks vs citations. SEO treats backlinks as votes of authority. GEO treats third-party brand mentions and citations as trust signals — and these don't have to include a hyperlink to count.
• Pages vs entities. SEO optimises individual pages. GEO optimises your brand as an entity — a coherent, recognisable thing that AI engines can confidently identify and describe.
• Ranking position vs mention rate. SEO success is measured in rankings and traffic. GEO success is measured in how often your brand is mentioned across queries, with what sentiment, and compared to competitors.

Why you need both

Some marketing teams treat GEO as “the thing that replaces SEO.” That's a mistake. Search engines and AI engines are not in direct competition — they're different surfaces serving different moments.

A user researching a complex topic might use Google to explore multiple options and then use ChatGPT to get a direct recommendation. If you only win at one, you're invisible in the other.

How to prioritise if resources are limited

1. If you're already doing solid SEO, GEO is the logical next frontier. Your technical foundation is there — now build on it with entity optimisation and AI-specific content.
2. If your SEO is weak, fixing it first will give you the biggest return, with GEO benefits as a secondary gain.
3. In fast-moving categories (tech, finance, healthcare), AI search adoption is highest — making GEO more urgent regardless of your SEO maturity.

Not sure where you stand? Run a free audit to see your current AI visibility score.