SEO: how Google ranks websites, technical SEO, on-page SEO, content, backlinks and local SEO in Kenya

SEO (search engine optimisation) is the work of making your website appear higher in Google (and Bing) when people search for what you offer: "plumber in Kilimani", "best laptops for students Kenya", "how to register a business name in Kenya". Visitors from search are valuable because they're actively looking; unlike ads, you don't pay per click. SEO takes time (often months) and there are no guaranteed #1 rankings, but steady, honest work brings compounding results. This unit explains how search engines work and the main areas of SEO, with practical steps for Kenyan businesses and websites.

How search engines work

1. Crawling: Googlebot discovers pages by following links and reading sitemaps.
2. Indexing: Google analyses each page (text, images, structure) and stores it in its index. Pages not indexed can't rank.
3. Ranking: For each search, Google's algorithms choose and order the most relevant, helpful, trustworthy results, using hundreds of signals: relevance to the query, content quality, usability (mobile, speed, HTTPS), links from other sites, location (for local searches) and more.

Increasingly, results include AI overviews, maps, images, videos and "People also ask" boxes, so useful, clearly structured content matters even more.

Search intent

Every search has a purpose:

Match the page type to the intent: a long guide won't rank for "buy" searches, and a product page won't rank for "how to".

Pillar 1: Technical SEO

Make sure Google can crawl, index and understand your site:

Pillar 2: On-page SEO

Each important page should target one main topic/keyword (the keyword research lesson shows how to find them).

def audit(title, description, h1_count, has_alt_text):
    issues = []
    if not 30 <= len(title) <= 60:
        issues.append(f"Title length {len(title)} (aim for about 30–60)")
    if not 70 <= len(description) <= 160:
        issues.append(f"Description length {len(description)} (aim for about 70–160)")
    if h1_count != 1:
        issues.append(f"{h1_count} H1 headings (use exactly one)")
    if not has_alt_text:
        issues.append("Images missing alt text")
    return issues or ["Basic on-page checks passed"]

print(audit("Home", "Welcome", 0, False))
print(audit("Website Design in Nairobi – Mobile-Friendly Sites | Marzley",
            "Professional websites for Kenyan businesses with M-Pesa payments, SEO and support. Get a free quote today.",
            1, True))

Pillar 3: Content

Google's guidance is to create helpful, reliable, people-first content. In practice:

• Answer real questions customers ask (pricing, process, comparisons, local information).
• Show experience: real photos, case studies, prices, local details, your own data.
• Keep it accurate and updated (dates, prices, laws).
• Cover topics thoroughly; group related articles into topic clusters linked to a main "pillar" page.
• Avoid thin, copied or mass-produced AI text with no added value.

E-E-A-T

Google's quality raters look for Experience, Expertise, Authoritativeness and Trustworthiness, especially for "Your Money or Your Life" topics (health, finance, legal, safety). Show author names and credentials, contact details, physical address, reviews, clear policies and sources.

Pillar 4: Off-page SEO (backlinks and mentions)

Backlinks (links from other sites to yours) act like votes of confidence, especially from relevant, reputable sites.

Ways to earn them honestly:

• Get listed in reputable Kenyan business directories and industry associations.
• Partners, suppliers and clients linking to you ("website by...", case studies).
• Local press, blogs and podcasts: share stories, data or expert comments.
• Create genuinely useful resources (guides, calculators, templates) others want to cite.
• Sponsor or participate in community events with online coverage.

Avoid buying links or joining link schemes: Google can ignore or penalise them.

Pillar 5: Local SEO

For businesses serving a location ("near me" searches and map results):

• A complete, verified Google Business Profile (next lessons) with the right category, hours, photos and posts.
• Consistent NAP (Name, Address, Phone) across your website, profile and directories.
• Reviews: ask happy customers; reply to all reviews.
• Location pages for each area you genuinely serve (with unique content, not copy-paste).
• LocalBusiness structured data on your site.

Measure with Google Search Console

Free and essential:

• Performance: queries people used, impressions, clicks, average position, click-through rate.
• Indexing: which pages are indexed and why others aren't.
• Sitemaps: submit and monitor.
• Core Web Vitals and HTTPS reports.
• Manual actions and security issues alerts.

Also use Google Analytics (traffic and conversions) and track enquiries/sales that came from organic search.

How long does SEO take?

New sites often take 3–6+ months to gain meaningful traffic; competitive keywords take longer. Local SEO for a Google Business Profile can show results sooner. Anyone promising "#1 on Google in a week" or "guaranteed rankings" is misleading you.

Mistakes to avoid

Summary

• Google crawls, indexes and ranks pages by relevance, quality, usability, links and location; match pages to search intent.
• Technical SEO: HTTPS, mobile, speed, sitemap, robots.txt, clean URLs, canonicals, redirects, structured data.
• On-page: unique titles and descriptions, one H1, clear headings, readable URLs, alt text, internal links, calls to action.
• Helpful, experience-rich content with E-E-A-T; earn genuine backlinks; build local SEO with Google Business Profile, NAP and reviews.
• Measure in Search Console and Analytics; expect months, avoid guarantees and spam tactics.