SEO
Aussi : SEO, Search Engine Optimization, organic search optimization, natural search, référencement naturel, référencement (SEO)
Search Engine Optimization: the practice of improving your pages' natural (unpaid) rankings in search engine results pages to attract more organic traffic.
What it is
SEO (Search Engine Optimization) is the discipline of improving a website's visibility in the organic (unpaid) results of search engines like Google or Bing. When a user types a query, the engine ranks pages by relevance and quality. SEO is the ongoing effort to earn higher positions for the queries that matter to your business, without paying for placement.
SEO is usually broken into three areas:
- Technical SEO: crawlability, site speed, mobile rendering, structured data, and a clean URL structure so engines can access and understand pages.
- On-page SEO: content quality, keyword relevance, titles, headings, and internal linking that match user intent.
- Off-page SEO: external signals of authority, mainly backlinks from other reputable sites.
Why it matters
Organic search is often the largest and lowest marginal-cost acquisition channel. Unlike paid ads, an SEO position does not disappear when you stop spending, though it requires sustained investment to maintain. It compounds: content and authority built today keep returning traffic for years.
- Cost structure: high upfront and fixed effort, near-zero cost per additional click.
- Trust: users often trust organic results more than ads.
- Durability: rankings are an asset, not a rented slot.
How it is used in practice
1. Keyword and intent research: identify what your audience searches and why.
2. Content mapping: create or improve pages that answer those queries better than competitors.
3. Technical fixes: resolve crawl errors, improve Core Web Vitals, add structured data.
4. Link building and PR: earn citations that signal authority.
5. Measurement: track rankings, organic sessions, and conversions in analytics and search console tools.
Concrete worked example
A B2B software firm sells invoice automation. Its blog post targeting "how to automate accounts payable" ranks position 8, getting roughly 2% of clicks on that query (about 200 monthly searches, so ~4 visits). The team improves the article, adds an FAQ with structured data, and earns three backlinks from finance publications. Over three months it climbs to position 3, where click share is around 10% (~20 visits). At a 3% conversion to demo and a known pipeline value per demo, those extra 16 visits per month translate into measurable, recurring pipeline at no per-click cost, which is the core SEO business case.