We exist for a single reason: to make sure the enterprises we serve remain visible as artificial intelligence rewrites the rules of discovery.
Founded at the dawn of the AI search revolution, MainDomainSEO is dedicated to helping enterprises stay visible, credible and cited as AI reshapes how the world discovers information. When answers replace links, being the trusted source isn't a marketing advantage — it's survival.
Our recommendations come from continuous, first-hand research into how the leading models actually select and cite sources — not guesswork.
With teams in Seattle and Kent and clients across six continents, we deliver AISO in dozens of markets and languages.
Every engagement is tied to measurable AI-visibility outcomes. We report on the citations, entities and answer share we win for you.
Headquartered in Seattle, WA with our European base in Kent, UK — serving enterprises wherever AI search matters.
MainDomainSEO founded in Seattle — one of the first firms to treat AI answer engines as a distinct discovery channel.
Reached our first 50 enterprise clients and published our foundational AISO methodology.
Opened our European base in Kent, UK and expanded into the Asia-Pacific market.
Surpassed 150+ enterprise clients across 30+ countries and 12 industries.
Launched the AI Citation Lab — our dedicated research unit tracking how models select and cite sources.
We operate at the frontier — constantly testing new models, surfaces and citation behaviours before they hit the mainstream.
Clear reporting, honest expectations and metrics you can verify. No black boxes, no vanity numbers.
Everything ladders up to measurable outcomes: more citations, stronger entities and greater share of the AI answer.
