SEO

    What is SEO (Search Engine Optimization)?

    The practice of optimizing websites and content to rank higher in search engine results pages (SERPs), increasing organic visibility and traffic.

    Updated 2026-03-08

    Key Takeaways

    • 1Google #1 gets 39.8% of clicks while page 2 gets under 1% (First Page Sage, 2025)
    • 2Organic search drives 53% of all website traffic (BrightEdge)
    • 3Three pillars: Technical, On-Page, Off-Page SEO
    • 4AI Overviews appear in growing share of searches. Strong SEO is the foundation for GEO

    Search Engine Optimization covers technical improvements, content creation, and link building to earn organic traffic. Unlike paid ads, SEO compounds over time. A well-optimized page can generate traffic for years.

    Modern SEO goes beyond keyword stuffing. It requires understanding search intent, building topical authority through content clusters, and meeting Core Web Vitals standards.

    Organic search drives 53% of all website traffic (BrightEdge), more than paid, social, and direct combined.

    How SEO Works

    Search engines use crawlers to discover pages, then algorithms evaluate hundreds of ranking factors per query.

    Technical SEO: Site speed, mobile-friendliness, HTTPS, schema markup, Core Web Vitals (LCP < 2.5s, INP < 200ms, CLS < 0.1).

    On-Page SEO: Keyword targeting, content depth, internal linking, meta tags, E-E-A-T signals.

    Off-Page SEO: Backlinks from reputable sites, brand mentions, topical authority, digital PR.

    Google CTR by Position

    PositionCTR
    #139.8%
    #218.7%
    #310.2%
    #47.4%
    #55.1%
    #6-101.6–3.9%
    Page 2+< 1%

    *Source: First Page Sage, 2025*

    Top 3 positions capture nearly 69% of all clicks. When an AI Overview appears, organic CTR below it drops further.

    SEO vs GEO

    SEOGEO
    TargetSERP rankingsAI-generated responses
    MetricPosition, CTR, Organic TrafficAVI, Citation Rate
    ContentKeyword-optimized for humansStructured for AI extraction
    AuthorityBacklinks & Domain AuthorityBrand mentions & source diversity
    TrafficClick-through from SERPZero-click brand exposure

    The most effective strategy in 2025–2026 combines both. SEO builds the indexed content foundation that AI models draw from; GEO ensures your brand gets cited in AI answers.

    SEO in the AI Era

    What's changing:

    • AI Overviews are expanding across Google searches (Semrush, 2025)
    • Zero-click searches continue to grow: users get answers without clicking
    • AI crawlers are increasing their crawl activity significantly

    What still works:

    • Pages ranking in the top 3 are significantly more likely to be cited in AI Overviews
    • Strong E-E-A-T correlates with higher AI citation rates
    • Schema markup helps AI understand and cite your content
    • Quality backlinks remain the strongest ranking signal

    Updated playbook:

    • Add a clear, quotable definition in the first paragraph of every page
    • Build topical authority through content clusters
    • Monitor SERP rankings and AI citation status together

    Why It Matters

    Google processes over 8.5 billion searches daily. Position #1 captures 39.8% of clicks; page 2 gets under 1% (First Page Sage, 2025). Organic search consistently delivers higher conversion rates than paid channels.

    The landscape is shifting. AI Overviews are appearing in a growing share of Google searches (Semrush, 2025), and zero-click searches continue to rise. Strong SEO is now the prerequisite for GEO. AI models cite pages that already rank well and demonstrate authority.

    Example

    A B2B SaaS company targeting "project management tool" builds a pillar page covering comparisons, pricing, and use cases. They add schema markup, create a 15-article content cluster, and earn 40+ backlinks. Over 8 months, the page climbs from position 45 to 3, with organic traffic growing 20× and demo requests increasing significantly, with zero ad spend.

    How Halox Helps

    Halox connects SEO and GEO in one workflow:

    • Keyword Dashboard: Search volume, difficulty, SERP features, and AI citation data for each keyword in a single view
    • Content Factory: Generate articles optimized for both search engines and AI citation, with built-in schema markup
    • SERP + AI Monitoring: Track your Google rankings alongside AI platform citation status on the same dashboard

    Frequently Asked Questions

    For competitive keywords, typically 3-6 months. Low-competition long-tail keywords can show results in 2-4 weeks. SEO compounds over time: a page optimized today generates increasing traffic over years.

    More than ever. AI models rely on indexed web content to generate answers. Pages that rank well in traditional search are significantly more likely to be cited in AI responses. The key shift: SEO alone isn't enough. Combine with [GEO](/en/glossary/geo) to ensure your content is cited, not just indexed.

    On-page: content quality, keywords, meta tags, internal links, schema markup. These are things you control on your own site. Off-page: backlinks, brand mentions, reputation signals. These happen on other sites. On-page = relevance, off-page = authority.

    Which brands does AI recommend
    for this keyword?

    Check ChatGPT · Gemini · Perplexity results for free.

    Analyze with HaloX

    References & Further Reading

    3개 출처
    firstpagesage.com favicon
    First Page Sage: Google Click-Through Rates by Position (2025)
    brightedge.com favicon
    BrightEdge: Organic Channel Share Report
    semrush.com favicon
    Semrush: AI Overviews Study (2025)