SEO: definition
Organic search optimization: the set of techniques used to rank your pages in search results without paying for every click.
By Mathéo Ballasse · May 27, 2026
Definition
SEO (Search Engine Optimization) aims to position your pages on your ICP's queries, to capture free, recurring traffic. It rests on three pillars: content that truly answers search intent, clean technical foundations, and links that build authority. It's slow to build but cumulative: traffic gained doesn't stop when you stop paying.
Why it matters
SEO is one of the rare channels that lowers your CAC over time instead of holding it steady: once a page ranks, it generates leads month after month at no marginal cost. That's what makes acquisition durable and less dependent on ad budgets.
When to use it
You build it over the long run, first targeting specific, low-competition queries where you can genuinely be the best. Concretely, you start from your ICP's questions, answer them better than the pages already ranking, and interlink your content, like this glossary does.
Example
Writing a guide that ranks for "how to find your first SaaS customers" and captures founders in active search every month.
Common mistakes
- Expecting results within a few weeks.
- Targeting overly competitive keywords right away.
- Producing content without a clear search intent.
Don't confuse it with
- sea: SEO is the free, durable traffic from organic results; SEA is the paid advertising placed above those results.
What our data says
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Frequently asked questions
- How long before SEO pays off?
- Often several months: it's a long-term investment, not a channel for immediate results. That's why it's worth pairing with a faster channel at the start.