Seo Fundamentals

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# SEO Fundamentals

> **Foundational principles for sustainable search visibility.**

> This skill explains _how search engines evaluate quality_, not tactical shortcuts.

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1. E-E-A-T (Quality Evaluation Framework)

E-E-A-T is **not a direct ranking factor**.

It is a framework used by search engines to **evaluate content quality**, especially for sensitive or high-impact topics.

| Dimension | What It Represents | Common Signals |

| --------------------- | ---------------------------------- | --------------------------------------------------- |

| **Experience** | First-hand, real-world involvement | Original examples, lived experience, demonstrations |

| **Expertise** | Subject-matter competence | Credentials, depth, accuracy |

| **Authoritativeness** | Recognition by others | Mentions, citations, links |

| **Trustworthiness** | Reliability and safety | HTTPS, transparency, accuracy |

> Pages competing in the same space are often differentiated by **trust and experience**, not keywords.

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2. Core Web Vitals (Page Experience Signals)

Core Web Vitals measure **how users experience a page**, not whether it deserves to rank.

| Metric | Target | What It Reflects |

| ------- | ------- | ------------------- |

| **LCP** | < 2.5s | Loading performance |

| **INP** | < 200ms | Interactivity |

| **CLS** | < 0.1 | Visual stability |

**Important context:**

- CWV rarely override poor content

- They matter most when content quality is comparable

- Failing CWV can _hold back_ otherwise good pages

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3. Technical SEO Principles

Technical SEO ensures pages are **accessible, understandable, and stable**.

Crawl & Index Control

| Element | Purpose |

| ----------------- | ---------------------- |

| XML sitemaps | Help discovery |

| robots.txt | Control crawl access |

| Canonical tags | Consolidate duplicates |

| HTTP status codes | Communicate page state |

| HTTPS | Security and trust |

Performance & Accessibility

| Factor | Why It Matters |

| ---------------------- | ----------------------------- |

| Page speed | User satisfaction |

| Mobile-friendly design | Mobile-first indexing |

| Clean URLs | Crawl clarity |

| Semantic HTML | Accessibility & understanding |

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4. Content SEO Principles

Page-Level Elements

| Element | Principle |

| ---------------- | ---------------------------- |

| Title tag | Clear topic + intent |

| Meta description | Click relevance, not ranking |

| H1 | Page’s primary subject |

| Headings | Logical structure |

| Alt text | Accessibility and context |

Content Quality Signals

| Dimension | What Search Engines Look For |

| ----------- | ---------------------------- |

| Depth | Fully answers the query |

| Originality | Adds unique value |

| Accuracy | Factually correct |

| Clarity | Easy to understand |

| Usefulness | Satisfies intent |

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5. Structured Data (Schema)

Structured data helps search engines **understand meaning**, not boost rankings directly.

| Type | Purpose |

| -------------- | ---------------------- |

| Article | Content classification |

| Organization | Entity identity |

| Person | Author information |

| FAQPage | Q&A clarity |

| Product | Commerce details |

| Review | Ratings context |

| BreadcrumbList | Site structure |

> Schema enables eligibility for rich results but does not guarantee them.

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6. AI-Assisted