Home/Glossary/SEO (Search Engine Optimization)

SEO (Search Engine Optimization)

The practice of optimizing websites and content to improve visibility and ranking in search engine results pages (SERPs).

Digital MarketingAlso called: "search engine optimization", "organic search", "search optimization"

SEO encompasses technical, content, and off-page strategies to help search engines understand and rank your website, driving organic traffic.

Why it matters

  • Organic search drives 53% of all website traffic.
  • Higher rankings lead to significantly more clicks (position 1 gets ~27% CTR).
  • SEO provides sustainable, long-term traffic unlike paid advertising.
  • Understanding search intent helps create better user experiences.

SEO pillars

  • Technical SEO: Site structure, performance, crawlability, indexability.
  • On-page SEO: Content optimization, keywords, meta tags, internal linking.
  • Off-page SEO: Backlinks, brand mentions, social signals.
  • User experience: Core Web Vitals, mobile-friendliness, engagement.

Technical fundamentals

  • Fast page load times (Core Web Vitals: LCP, FID, CLS).
  • Mobile-responsive design (mobile-first indexing).
  • Clean URL structure with keywords.
  • XML sitemaps and robots.txt configuration.
  • HTTPS security (ranking factor since 2014).
  • Structured data (Schema.org) for rich snippets.

Content optimization

  • Keyword research to understand search intent.
  • Quality content that satisfies user queries.
  • Proper heading hierarchy (H1, H2, H3).
  • Meta titles and descriptions that encourage clicks.
  • Internal linking to distribute page authority.
  • Regular content updates to maintain freshness.

Measuring success

  • Organic traffic growth (Google Analytics).
  • Keyword rankings (Ahrefs, SEMrush, GSC).
  • Click-through rate from SERPs.
  • Domain authority and backlink profile.
  • Conversion rate from organic traffic.

Common mistakes

  • Keyword stuffing instead of natural language.
  • Neglecting technical issues (broken links, slow pages).
  • Duplicate content across pages.
  • Ignoring mobile optimization.
  • Building low-quality or spammy backlinks.