SEO spans three broad areas: technical SEO (crawlability, site speed, indexability, structured data), content SEO (matching search intent, depth, and relevance), and off-site SEO (backlinks and brand authority signals). All three influence how search engines evaluate and rank a page.
SEO is a compounding channel — content and authority built today continue driving traffic long after the initial investment, unlike paid channels that stop the moment spend stops. It typically takes months, not days, to show meaningful results, since search engines need time to crawl, index, and evaluate new or updated content against competitors.