SEO
SEO improves organic visibility through technical foundations, relevant content, and authority: indexability, performance, and structured data.
Definition
SEO (Search Engine Optimization) is the practice of increasing a site’s visibility in organic search results by combining technical foundations (indexability, performance, structured data), content strategy (topics and intent), and authority (links and brand mentions).
Why it matters
- Organic traffic compounds over time and reduces dependence on ads
- Technical SEO prevents 'great content but not discoverable' issues
- In the AEO era, structured and citable content matters more
- Good SEO fundamentals also improve user experience (speed, usability)
- Competitors are investing in SEO; not doing so means losing visibility
- SEO traffic has high intent, often converting better than paid traffic
- Developer-led technical SEO can solve 80% of indexability issues
How to implement
- Start with indexability: robots / noindex / canonical / HTTP 200
- Ship clean metadata: title / description / OG
- Build topic clusters: tutorials + glossary + tools with strong internal links
- Improve CWV and UX (LCP/INP/CLS)
- Implement SSR/SSG or prerender to ensure crawlers get complete HTML
- Add structured data (JSON-LD) to describe entities and relationships
- Monitor index status and errors regularly in Search Console
Examples
html
<!-- Basic SEO metadata -->
<head>
<title>SEO Basics Guide | Developer SEO Hub</title>
<meta name="description" content="Learn SEO fundamentals from a developer perspective: technical SEO, structured data, performance." />
<link rel="canonical" href="https://example.com/learn/seo-basics" />
<meta property="og:title" content="SEO Basics Guide" />
<meta property="og:description" content="Learn SEO fundamentals from a developer perspective" />
</head>typescript
// Vite + React prerender SEO validation
function validateSEO(html: string, url: string) {
const issues: string[] = [];
if (!html.includes('<title>')) issues.push('Missing title tag');
if (!html.includes('rel="canonical"')) issues.push('Missing canonical');
if (!html.includes('name="description"')) issues.push('Missing meta description');
if (issues.length > 0) console.warn(`SEO issues on ${url}:`, issues);
}Related
Tutorials
FAQ
Common questions about this term.