/ˌel·em·en·oʊ·piˈiː·oʊ/ · noun, satirical · coined by Danny Sullivan, Google
1.The search optimization acronym to end all search optimization acronyms.
2.The professional discipline of making content worth citing — regardless of which three-to-eight letters the industry is calling it this quarter.
Etymology: from the part of the alphabet song where everyone gives up and mumbles. First recorded WordCamp US, August 28, 2025.
—days since the industry last invented an acronym (that we know of)
The Coinage
“Good SEO is good GEO, or AEO, AIO, LLM SEO, or LMNOPEO. So, they’re all fine. What I’m trying to say is: don’t panic.”
— Danny Sullivan, Google Search, WordCamp US keynote, Aug 28, 2025 (watch the moment)
Editor’s note: Search Engine Land transcribed it “LMNOPO”. Half the industry spread “LMNOPEO”. The acronym mocking acronym chaos does not itself have a standardized spelling. We consider this the strongest possible proof of concept.
Primary source №1: “Thoughts on SEO & SEO for AI, part 1” — Google Search Central. Where the acronym was born.Primary source №2: “SEO, AIO, GEO, your site, & third-party support to optimize for LLMs” — Google Search Central.
All entries describe the same craft: making content that machines find, trust, and cite. The only variable is the letterhead. Kept current so you don’t have to be.
SEO
Search Engine Optimization
b. ~1997 · coined by disputed, like everything else in this industry
The original. Understanding how people search and making sure your content is there — whatever “there” looks like this decade: blue links, snippets, voice, AI answers.
status: declared dead 27 times · attends every funeral
AEO
Answer Engine Optimization
b. ~2016 · reborn 2024
Optimizing to be the answer rather than the link. First hype cycle: voice assistants and featured snippets. Second hype cycle: AI answers. Same slides, new logo.
status: on its second lap
GEO
Generative Engine Optimization
b. Nov 2023 · coined by Aggarwal et al., Princeton / Georgia Tech / IIT — an actual peer-reviewed paper (KDD 2024)
The current front-runner, and the only entry with academic parents. Also a prefix meaning “earth”, which is why half its search results are about rocks.
status: front-runner · pending replacement
AIO
AI Optimization
b. 2024 · conflicts with AI Overviews, which Google also calls AIO
One acronym, two meanings, zero consensus. Using it in a meeting guarantees a clarifying question, which is 15% of the meeting gone.
status: ambiguous by design
LLMO
Large Language Model Optimization
b. 2023
Optimizing so LLMs retrieve and cite you. Technically the most accurate description of the work. Therefore, naturally, among the least used.
status: correct · unpopular
GAIO
Generative AI Optimization
b. 2023
GEO with extra letters.
status: see GEO
SGEO
Search Generative Experience Optimization
b. 2023 · d. May 2024, when Google renamed SGE to AI Overviews
A cautionary tale: an acronym tied to a product name. Lived less than a year. Every agency that rebranded around it politely pretends this never happened.
status: deceased · survived by AIO
VSO
Voice Search Optimization
b. ~2017 · powered by the prediction that 50% of searches would be voice by 2020
The previous hype cycle, preserved here as a control sample. The prediction is still waiting. The conference decks were lovely.
status: retired · historically instructive
LMNOPEO
all of the above
b. Aug 28, 2025 · coined by Danny Sullivan, on stage, mid-eye-roll
The only acronym honest enough to admit it’s an alphabet. Covers everything above and everything the industry invents next. You are here.
status: the final acronym (until the next one)
Professional Accreditation
Get LMNOPEO Certified™
Eight questions. There are no wrong answers, because there are no wrong acronyms. Pass rate: 100%.
Beneath the joke, one serious question
When AI answers your customers’ questions — are you in the answer?
The acronyms are interchangeable. Citations aren’t. AI Visibility Research is a fixed-scope study of whether AI answers actually use your site — and what to change if they don’t.
Topic-by-topic map of where AI answers cite your domain and where they cite your competitors instead, built from your real query data, not a demo dashboard.
An honest read of the noise: AI answers regenerate on every request, so we report what’s stable: topic-level citation and brand presence. Your page can be cited without your brand being named, and your brand mentioned without any page referred. We track both.
Entity, structured-data, and content recommendations, prioritized by what actually impacts AI visibility.
Delivered as a report and a working session, by a practitioner.