SEO has been the bedrock of digital marketing for twenty years. Rank on Google, get traffic. The formula was simple, if not always easy.
But search is changing at a pace most businesses aren’t tracking. And in 2026, the most important shift isn’t another algorithm update, it’s a fundamental change in how people find information online.
Welcome to the era of GEO: Generative Engine Optimisation.
So what exactly is GEO?
Generative Engine Optimisation is the practice of structuring your online content so that AI-powered tools such as ChatGPT, Google’s AI Overviews, Perplexity, Microsoft Copilot, read it, trust it, and cite it when answering user questions.
Traditional SEO is about ranking. GEO is about being cited.
That’s a meaningful distinction. In classic search, your goal is to appear on page one of Google. In AI search, your goal is to be the source an AI chooses to quote or reference when a user asks a relevant question. The mechanics are different. The signals are different. And the rewards are different too.
Why does this matter right now?
AI-generated summaries are increasingly appearing at the very top of search results, above every organic listing, every ad, every featured snippet. When a user asks Google a question and gets a comprehensive AI answer, many of them don’t scroll further.
At the same time, tools like ChatGPT have become primary research platforms for consumers making purchase decisions. B2B buyers research inside AI tools before ever visiting a supplier’s website. Consumers ask AI for local recommendations before opening Google Maps.
If your business isn’t appearing in those answers, you’re being filtered out at the very first stage of the buying journey.
How is GEO different from traditional SEO?
Traditional SEO relies heavily on keyword targeting, backlink authority, and technical on-page factors. These still matter. But GEO adds a new layer:
- Topical authority — AI tools prefer sources that cover a topic comprehensively, not just superficially
- Structured content — clear headings, direct answers, and logically organised information
- Factual accuracy and verifiability — AI models prefer content that can be cross-referenced
- Entity clarity — making it clear who you are, what you do, where you operate, and what makes you credible
- Schema markup — structured data that helps machine readers categorise your content correctly
- Content depth — pillar pages supported by clusters of related content perform significantly better
What does a GEO-optimised site look like in practice?
Think of it this way: a GEO-optimised site answers questions. It doesn’t just talk about itself, it addresses specific, intent-driven queries in clear, structured language.
For a local accountancy firm, that might mean a detailed page answering ‘what is the best business structure for a sole trader in the UK?’ For a plumber, it might mean content that clearly explains ‘how much does a boiler service cost in Hertfordshire?’ For a digital marketing agency, like us, it means content that directly, helpfully explains what we do and how we do it.
The content needs to be organised well, refreshed regularly, and supported by proper technical implementation on the back end.
How Thirty Six Digital approaches GEO
We’ve built GEO into our core SEO and content marketing offering. For clients on ongoing retainers, this means:
- Quarterly content audits to assess AI citation readiness
- Schema markup implementation and maintenance
- Topical cluster planning aligned to your service areas
- Page-level content restructuring to answer specific user queries
- Monitoring of AI citation presence using specialist tools
The window of opportunity is now
The businesses investing in GEO right now, before their competitors, are the ones who will dominate AI search results in the next eighteen months. Most small businesses in the UK haven’t heard of GEO yet, let alone started acting on it.
That gap won’t last long. If you want to get ahead of it, we’re ready to help. Get in touch for a free consultation on your current AI visibility.