seo-fundamentals

--- # SEO Fundamentals > **Foundational principles for sustainable search visibility.** > This skill explains _how search engines evaluate quality_, not tactical shortcuts. --- ## 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. --- ## 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 |...