Search engine optimization (SEO) is the practice of improving a website's visibility in organic search results through technical, content, and authority signals. The goal is to capture intent-based traffic at low marginal cost. It is the discipline of making a site easy for search engines to crawl, understand, and trust, so that the site's pages appear for the queries its target customers are actually typing.
Modern SEO operates on three pillars: technical (crawlability, indexation, page speed, structured data, mobile usability), content (topical depth, query intent match, freshness, original information), and authority (backlinks from reputable sites, brand mentions, entity recognition by AI systems). Organic search still drives roughl...