Generative Engine Optimisation (GEO) is the discipline of structuring your content, brand signals, and digital presence so that AI-powered answer engines — including ChatGPT, Google AI Overviews, Perplexity, and Microsoft Copilot — accurately represent and recommend your business when synthesising responses to user queries.
Where traditional SEO asks "how do I rank in a list of links?", GEO asks "how do I become part of the answer itself?"
What Is GEO?
Generative Engine Optimisation (GEO) is the practice of optimising your digital presence so that AI systems select, synthesise, and cite your brand in their generated responses. It is not a replacement for SEO. It is the next layer of visibility strategy that sits on top of it — and in 2026, it is the fastest-growing discipline in digital marketing.
The term was formally defined in a Princeton, Georgia Tech, and IIT Delhi research paper published in 2023, which demonstrated that specific content and structural changes could increase a brand's visibility in AI-generated responses by up to 40%. The researchers tested nine distinct optimisation strategies — including adding statistics, citing authoritative sources, and improving fluency — and measured their impact on citation likelihood across multiple generative AI systems.
The practical significance of that finding is substantial. A 40% improvement in AI citation likelihood, achieved through content and structural changes rather than paid placement, represents one of the highest-return optimisation opportunities available to businesses that act early.
GEO, SEO, and AEO: What Is the Difference?
These three disciplines are related but distinct. Conflating them leads to strategies that optimise for the wrong output.
| Discipline | Full Name | Optimises For | Output |
|---|---|---|---|
| SEO | Search Engine Optimisation | Ranked links in search results | A position on a results page |
| AEO | Answer Engine Optimisation | Inclusion in AI-generated answers | A mention or citation in a generated response |
| GEO | Generative Engine Optimisation | Accurate brand representation in generative AI | Correct, positive portrayal across all AI systems |
In practice, AEO and GEO are closely related and often used interchangeably in the industry. The clearest distinction is one of scope and emphasis. AEO tends to focus on the mechanics of getting cited — content structure, entity clarity, platform presence. GEO tends to focus on the accuracy and sentiment of how a brand is represented once it is cited, and on building the distributed trust infrastructure that makes citation sustainable across multiple AI platforms simultaneously.
Why GEO Matters for Australian Businesses in 2026
When someone asks an AI system to recommend a financial adviser in Brisbane, a marketing consultant in Melbourne, or a tradesperson in Perth, they are not looking at a ranked list of ten blue links. They are reading a generated answer — and the businesses that appear in those answers are not necessarily the best in their field. They are the businesses with the clearest, most consistent, and most widely corroborated entity presence across the sources that AI systems draw from.
For Australian businesses, this creates a specific challenge. The sources that AI systems most frequently cite — Reddit, Wikipedia, authoritative industry publications — skew heavily towards US and UK content. Australian businesses are competing for citation in a landscape where the default reference points are not local. A deliberate GEO strategy addresses this directly by building presence in the Australian-specific sources that AI systems actually draw on when responding to locally-framed queries.
SE Ranking's analysis of 129,000 domains found that referring domains are the single strongest predictor of ChatGPT citation likelihood. Sites with over 350,000 referring domains averaged 8.4 citations per query, compared to 1.6 for sites with minimal backlink profiles. The critical inflection point is at 32,000 referring domains, where citations nearly double from 2.9 to 5.6 — a clear signal that link authority compounds once a site crosses a credibility threshold. For most Australian businesses, this means the path to AI citation runs through building a credible, distributed external presence — not through on-page keyword optimisation alone.
A Worked Example: What GEO Looks Like in Practice
Consider a Melbourne-based accounting firm that currently ranks on page 2 of Google for "small business accountant Melbourne" but does not appear in any AI-generated answers when users ask ChatGPT or Perplexity for accountant recommendations.
A GEO audit of this firm would typically reveal: no Google Business Profile optimisation (or an incomplete one), no presence in relevant Reddit communities (r/AusFinance, r/AusEntrepreneur), no listings on review platforms like ProductReview.com.au or Trustpilot, inconsistent business descriptions across directories, and blog content that is keyword-optimised but not structured to answer specific questions directly.
A GEO strategy for this firm would not start with new content. It would start with entity clarity: ensuring the firm's name, address, phone number, category, and description are identical across every platform. Then platform presence: claiming and completing profiles on Google Business Profile, LinkedIn, ProductReview.com.au, and relevant industry directories. Then community engagement: having the firm's principals answer questions in r/AusFinance with genuine expertise, not promotional intent. Then content depth: rewriting existing blog posts to answer specific questions ("What can I claim as a small business tax deduction in Australia?") with verifiable data points.
Within three to six months, this approach typically produces the first AI citations — initially in Perplexity (which uses real-time retrieval) and Google AI Overviews, then gradually in ChatGPT as the entity's external presence grows.
How GEO Works: The Core Mechanics
GEO is not a single tactic. It is a set of overlapping disciplines that together determine whether an AI system has enough accurate, consistent, and corroborated information about your business to include it in a generated answer.
1. Entity Clarity
AI systems need to identify your business as a distinct, well-defined entity. This means consistent name, location, category, and description across every platform where you have a presence. Inconsistency creates ambiguity that AI systems resolve by defaulting to better-defined competitors. Your business name, address, phone number, and category description should be identical across your website, Google Business Profile, industry directories, and social profiles.
2. Distributed Platform Presence
A single website is a single point of failure. AI systems draw from multiple independent sources when constructing answers. For Australian businesses, this means building genuine presence across the platforms that AI systems actually cite: relevant Reddit communities, Google Business Profile, industry directories, LinkedIn, and authoritative publications. SE Ranking's research found that domains with heavy Reddit presence averaged 7 citations per query, compared to 1.8 for those with minimal activity.
3. Independent Corroboration
AI systems weight information more heavily when it is corroborated by multiple independent sources. The same accurate information about your business appearing across your website, Google Business Profile, an industry directory, and a media mention carries substantially more weight than any single source alone. This is the principle behind Reviewly's Satellite Search™ framework — distributed verification rather than centralised optimisation.
4. Content Depth and Structure
SE Ranking's research found that articles over 2,900 words averaged 5.1 ChatGPT citations, compared to 3.2 for articles under 800 words. Structure matters beyond raw word count: pages with section lengths of 120 to 180 words between headings performed best. Content with 19 or more statistical data points averaged 5.4 citations, compared to 2.8 for pages with minimal data. Pages updated within three months averaged 6 citations versus 3.6 for outdated content.
5. Schema Markup and Structured Data
JSON-LD schema markup provides AI systems and search engines with explicit, machine-readable signals about your business: what it is, who it serves, where it operates, and what it offers. For Australian businesses, geo-targeting schema (areaServed, addressCountry, inLanguage: en-AU) is a technical signal that most local competitors are not yet implementing.
6. Trust Signal Development
SE Ranking's research found that presence on review platforms like Trustpilot, G2, Capterra, and Google Reviews correlated strongly with increased AI citations. Domains listed on multiple review platforms earned 4.6 to 6.3 citations on average, compared to 1.8 for those absent from such platforms — a 3x higher citation rate. For Australian businesses, this means actively managing reviews on Google Business Profile, ProductReview.com.au, and relevant industry-specific platforms. The mechanism is corroboration: review platform presence signals to AI systems that a business is real, active, and trusted by customers.
GEO Across Different AI Platforms
Not all AI answer engines behave the same way. Understanding the differences is essential for allocating GEO effort effectively.
| Platform | Primary Citation Mechanism | Key Australian Lever |
|---|---|---|
| ChatGPT | Training data + browsing mode retrieval | Reddit, Wikipedia, authoritative publications |
| Google AI Overviews | Real-time retrieval from Google's index | Traditional SEO signals + schema + GBP |
| Perplexity | Real-time web retrieval with explicit citations | Content structure, authority sites, community sources |
| Microsoft Copilot | Bing index + web retrieval | Bing Webmaster Tools, structured data |
Reviewly's observational study of 23 AI search outputs found that Perplexity cited community and forum sources in 63.6% of outputs, while Google cited them in 0% of outputs. Google cited video content in 37.5% of outputs, compared to 9.1% for Perplexity. These differences mean a GEO strategy that only optimises for one platform is leaving significant citation potential on the table.
The REVIEW Method®: A GEO Framework for Australian Businesses
The REVIEW Method® is a practical framework developed by Reviewly for implementing GEO systematically. Each letter represents a signal category that AI systems use to evaluate whether a business is worth recommending.
| Signal | What It Means |
|---|---|
| R — Recognised | Present in the platforms and communities where your category is discussed |
| E — Established | Consistent entity presence across directories, industry bodies, and structured data |
| V — Verified | Claims corroborated by independent third parties: media, associations, client reviews |
| I — Influential | Contributing genuine insight to conversations in your category |
| E — Enduring | Maintaining consistent presence over time — AI systems weight sustained signals |
| W — Worth Choosing | The outcome: a business AI systems can confidently recommend |
For a detailed breakdown of how to implement each signal, see Reviewly's REVIEW Method® service page.
Getting Started with GEO: A Practical Audit
Before building a GEO strategy, audit your current position across five dimensions:
1. Entity audit — Search for your business name in ChatGPT, Perplexity, and Google AI Overviews. What does each system say? Is the information accurate? Is it consistent? Are there gaps or errors?
2. Platform presence audit — List every platform where your business has a profile. Check for NAP consistency (name, address, phone). Identify the platforms where you have no presence but your competitors do.
3. Content depth audit — Review your existing content. Does it answer specific questions directly? Does it contain verifiable data points? Is it updated regularly? Is it structured with clear headings that match the language of user queries?
4. Backlink and citation audit — How many referring domains does your site have? Are you mentioned in any industry publications, media outlets, or community forums? What is the geographic distribution of those mentions?
5. Schema audit — Does your site have Organisation schema? LocalBusiness schema? Article schema on blog posts? Are your areaServed and addressCountry fields populated correctly?
If you would like a structured assessment of your current GEO position, Reviewly's AI Visibility Audit covers all five dimensions.