LayerScore
The composite content visibility score produced by the Three-Layer Approach framework. Formula: L1 × 30% + L2 × 40% + L3 × 30%. Scale 0–100.
This term is part of the 3LA EntityMap → /entitymap.html
Related terms
Three-Layer Approach (3LA)
coreA content optimization framework that scores web content across three layers: human experience (L1), search engine visibility (L2), and AI citation readiness (L3).
L3 AI Layer
coreThe third layer in the Three-Layer Approach framework. Measures 12 metrics including Structural Proof Gap, Citation-Worthiness, Citation Readiness, Answer-First Format, LLMs.txt, and Chunk Optimization. Citation rate measured across ChatGPT (GPT-5.2), Claude Sonnet 4.6, Gemini 3.1 Pro in every audit. Weight: 30% of LayerScore. Platform average L3: 68/100. Typical lift after optimisation: +28 points.
Dark Opportunities
GEOA page with meaningful impressions in Google Search Console and Bing Webmaster Tools that never appears in ChatGPT, Perplexity or Gemini AI Overviews - findable to humans via traditional search, but effectively invisible to AI.
GEO Gap
metricThe difference between a site's L2 Search score and L3 AI score in 3LA - a high GEO Gap indicates strong SEO visibility but poor AI citability. Formula: L2 Score − L3 Score.
