The practice of improving your website’s visibility in search engine results so the right people find your content when they search for topics you cover.
SEO is the discipline that started it all. For over two decades, it has been the primary way businesses earn organic traffic from search engines like Google and Bing.
The core principle hasn’t changed: create content that matches what people are looking for, structure it so search engines can understand it, and build enough authority that the search engine trusts your site over alternatives. What has changed is everything around it.
What SEO looks like now
Google processes billions of queries daily, and AI Overviews now appear in a significant share of U.S. searches. When they do, the click-through rate on the top organic result drops sharply. The blue links haven’t disappeared, but they share the page with AI-generated summaries, featured snippets, knowledge panels, video carousels, and “People also ask” blocks.
For marketing teams, this means ranking first no longer guarantees the traffic it once did. A page can hold the number-one organic position and still lose clicks to an AI Overview that answers the query without requiring a click at all.
What still works
The fundamentals still hold. Technical SEO (site speed, crawlability, mobile responsiveness, clean URL structure) remains the foundation. Content quality and relevance still determine rankings. Backlinks still signal authority, though their relative weight has shifted.
What matters more than it used to: topical depth. Search engines increasingly favor sites that demonstrate comprehensive coverage of a subject over sites that publish isolated pages targeting individual keywords. A single article ranking for a competitive term is harder to sustain than a cluster of related content that covers the topic from multiple angles.
Where SEO sits in the bigger picture
SEO, AEO, and GEO are not competing strategies. They layer. SEO makes your content findable in traditional search results. AEO makes it extractable as a direct answer. GEO makes it citable across generative AI platforms. Most marketing teams will need all three, weighted according to where their audience searches and how they consume information.
The teams that treat SEO as the foundation and layer AEO and GEO on top will be better positioned than those chasing any single discipline in isolation.