Quick answer
SEO (search engine optimization) helps pages get crawled, indexed and ranked. AEO (answer engine optimization) structures content so search features and assistants can extract direct answers. GEO (generative engine optimization) aims to have your brand mentioned or cited in AI-generated answers. SXO (search experience optimization) improves what happens after the click so visitors find what they need and convert. AIO is sometimes used for AI optimization generally. Start with technical SEO, helpful content and conversion paths, since the others build on them.
Key takeaways
- The acronyms describe overlapping emphases, not separate channels.
- Technical SEO and helpful content underpin all of them.
- SXO connects visibility to enquiries and revenue.
- Prioritize based on your current gaps, not on trend labels.
Who this guide is for
Business owners and marketing teams confused by new search acronyms and deciding where to invest first.
SEO: be discoverable and rank
Search engine optimization covers technical health such as crawling, indexing, site speed and mobile usability; content that matches what people search for; internal linking; and authority from reputable links and mentions. It remains the foundation because search engines and most AI systems that retrieve web content depend on pages being accessible, understood and trusted. Without SEO basics, investments in newer tactics have little to build on.
AEO: be the direct answer
Answer engine optimization focuses on questions. It shapes content so a clear, self-contained answer can be extracted for featured snippets, “People also ask” boxes, voice assistants and AI summaries. Techniques include answer-first paragraphs, question-based headings, concise definitions, lists and tables, and structured data that matches visible content. AEO is largely good editorial structure applied to real buyer questions.
GEO: be mentioned in AI answers
Generative engine optimization aims to increase how often AI systems such as ChatGPT, Gemini, Perplexity and Copilot mention or cite your brand when generating responses. It emphasizes specific and verifiable content, citations, original data, consistent brand information and third-party coverage, plus making sure the relevant AI crawlers can access your content. Measurement is still immature, so results should be tracked as trends.
SXO: turn visits into outcomes
Search experience optimization looks at what happens after someone arrives from search or an AI citation. Does the page match their intent, load quickly, answer their question and offer a clear, low-friction next step? SXO combines SEO with user experience and conversion optimization. A page that ranks well but confuses visitors wastes the visibility you earned. For lead generation, SXO often delivers faster returns than chasing new rankings.
AIO and other labels
AIO is used inconsistently: sometimes for “AI optimization” of content for AI systems, sometimes for Google’s AI Overviews, and sometimes for using AI tools in SEO work. LLMO, for large language model optimization, is another label for similar ideas to GEO. Rather than debating names, focus on the underlying tasks: accessible pages, clear answers, trustworthy evidence, consistent entity information and good experiences after the click.
Where to start
Audit first. If pages are not indexed, slow or broken on mobile, fix technical SEO. If you rank but get few enquiries, work on SXO: intent match, page clarity and forms. If you have good pages but they rarely appear in answer features, apply AEO structure. If competitors appear in AI answers and you do not, add GEO work on citable content and third-party presence. Most businesses need a sequence of all four, ordered by their largest gap.
Measure across the funnel
Track indexing and rankings for SEO, featured snippet and question query visibility for AEO, AI referrals and periodic citation checks for GEO, and engagement, enquiries and qualified leads for SXO. Connect enquiries to the pages and sources that produced them in your CRM. Combined measurement prevents optimizing one acronym at the expense of the outcome that matters: qualified business.
Scope checklist
- Are key pages indexed, fast and mobile-friendly?
- Do pages answer buyer questions directly?
- Are you mentioned in AI answers for your core topics?
- Do search visitors convert into enquiries?
- Which gap is largest right now?
Frequently asked questions
Is SEO dead because of AI search?
No. AI search features and assistants still depend on crawlable, trustworthy web content, and search engines continue to send traffic. SEO practices are evolving to include answer and citation visibility.
What does SXO stand for?
Search experience optimization, which combines SEO with user experience and conversion optimization so search visitors find what they need and take action.
Should a small business invest in GEO?
First ensure SEO basics and conversion work. Then add GEO elements such as clear, specific content and consistent business listings, which are low-cost and broadly useful.
Sources and implementation references
- Google Search Central: SEO starter guide
Foundational SEO guidance from Google.
- Google Search Central: AI features and your website
How AI Overviews and AI Mode relate to standard SEO.
Prepared with AI assistance as an engineering decision guide. Examples are illustrative unless explicitly labelled as an internal implementation. No independent expert review or customer outcome is claimed.
Want more qualified enquiries from search and AI answers?
Share your website, main services and target markets. We review technical, content and conversion gaps before proposing scope. Scope, access, dependencies and commercial terms are agreed before delivery. Do not submit passwords, API keys or confidential records.