Inside Google Maps: 72 ranking signals and the architecture behind local search
Newly recovered Google data reveals how entities, web signals, geography, and semantic systems shape local visibility.
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Olivier de Segonzac's latest articles
Inside ChatGPT’s retrieval stack: The index, cache, and pages it actually reads
New research exposes the mechanics behind ChatGPT citations, including what gets retrieved, what gets read, and what ultimately gets cited.
Inside ChatGPT Search: how web.run and fan-out queries shape AI visibility
New research reveals how ChatGPT fetches pages, selects sources, and summarizes content — with practical prompts to test your own site.
Inside SearchGuard: How Google detects bots and what the SerpAPI lawsuit reveals
We fully decrypted SearchGuard, the anti-bot system protecting Google Search. Here's exactly how Google tells humans and bots apart.
Google Daily Hub: Anatomy of an overambitious system shaping the future of search
Daily Hub tried to merge embeddings, entities, and real-time context – and buckled under the system’s complexity.
Inside Google’s secret search systems: 1,200 experiments, AI agents, and entities
A deep dive into the unseen systems behind Google Search – uncovering live experiments, entity-based infrastructure, AI agents, and more.