The five, in one line each
Stripped of the hype, here is what people mean when they reach for each label:
- SEO, search engine optimization: get found in Google. The classic. Keywords, links, pages that answer what people search for.
- AEO, answer engine optimization: be the answer, not just a result. The clean facts and structure that let a model quote you directly.
- GEO: confusingly used two ways. Some mean geographic, winning local searches; others mean generative engine optimization, showing up in AI answers. Same three letters, different jobs.
- SXO, search experience optimization: once someone lands, make them stay. Speed, clarity, a page that does what the click promised.
- AIO, AI optimization: structure your content so AI systems can read and reuse it cleanly. Clean code, clear entities, no important text trapped behind scripts.
They are mostly the same question
Notice what every one of these is really asking: can people and machines find you, understand you, and trust you enough to send someone your way. That is one question wearing five hats. The acronyms differ in emphasis, not in kind.
They also stack on top of each other rather than competing. AEO, GEO and AIO all assume the search engine basics underneath them are sound. There is no being the answer if a crawler cannot even reach your page. The newer letters are refinements of SEO, not replacements for it, no matter how often a thread tells you SEO is dead.
Two of them probably do not apply to you
Before you try to cover all five, cross some off. If you sell software, an app, or anything people buy online rather than down the street, the local meaning of GEO is not your fight. Ranking for best plumber near me matters to a plumber, not to a SaaS (a business that sells software online, usually by subscription). Chasing it is effort spent in the wrong place.
SXO is real and worth caring about, but it is a deep discipline of its own, closer to conversion and product design than to being discovered. It deserves attention once people are arriving and not converting. It is not where you start if the problem is that nobody, human or AI, can find you yet.
What actually moves the needle
Tune out the labels and the real work is short and unglamorous. Almost everything that helps you get found, by Google and by AI, comes down to a handful of things:
- Crawlers can reach you. Your robots.txt is not quietly shutting out Google or the AI bots, and your pages are not hidden behind logins or broken links.
- Your content is in the HTML, not bolted on by JavaScript a crawler may never run. The title, the meta description, the actual words: all there in the source.
- Every important page says plainly what it is. Clear titles, a real description, content that answers a question instead of dancing around it.
- Structured data is present and valid. Schema and clean markup tell a machine what your page is, so it can quote you with confidence.
- The page is fast and does not fight the reader. The part of SXO that helps discovery is simply not making people, or bots, wait and struggle.
So which letters should you chase?
None of them, really. Chasing acronyms is how you end up with five half-finished checklists and a nagging sense you are behind on something. The acronyms are marketing for the people selling courses about them. The work underneath is the same work it has always been, with a little extra now aimed at AI.
Pick the goal instead of the label: be findable, by search engines and by the AI tools people increasingly ask first. Get the fundamentals above right and you have covered the useful core of SEO, AEO and AIO in one go, without memorizing a single one of them.
If you want to know where you actually stand, HowFindable scans your site for free and gives you two scores, one for Google and one for AI, plus the specific signals you are missing. No jargon to learn, no five frameworks to juggle. If you want the fixes, we generate the files for you, ready to upload. That is the whole point: skip the alphabet soup, fix the things that matter.