For the past two decades, we’ve lived in the era of search.
Brands built their presence around one simple question:
“How do we rank on Google?”
But in 2025, that question stopped making sense.
Because the world doesn’t search anymore.. it asks.
And the answers don’t come from links; they come from language models like ChatGPT, Claude, Gemini, and Perplexity.
Welcome to The End of Search and the rise of GEO: Generative Engine Optimization.
What the Book Is About
The End of Search is my field guide for understanding how visibility works in the age of AI.
It’s not a theory book it’s a playbook.
It helps you see what’s actually changing underneath the surface:
the shift from indexed pages to embedded knowledge.
If SEO was about being found,
GEO is about being understood.
The book explains how AI models learn, retrieve, and reason —
and what you can do to make sure your brand is part of that reasoning process.
Part I – The Death of SEO
The first chapters explore why traditional SEO is losing ground.
Search traffic is dropping. Click-through rates are collapsing.
And users are moving their questions to generative systems that don’t link out — they synthesize.
“Search engines ranked what we said.
Generative engines remember what we mean.”
You’ll learn how Google’s model-driven shift, AI overviews, and RAG-based systems are already reshaping discovery — and what that means for every brand that still measures success in clicks.
Part II – The Rise of GEO
In this section, I introduce GEO — Generative Engine Optimization:
a new way to think about digital visibility.
Here you’ll learn:
- What Generative Engines are (ChatGPT, Claude, Gemini, Perplexity).
- How AI models recall information (pretrained vs. retrieval-based).
- Why structured, consistent, machine-readable data is the new SEO.
- The five forces that determine your AI visibility.
Where SEO was about keyword density, GEO is about semantic density —
the clarity, credibility, and consistency of your brand narrative across the web.
Part III – The 5 Metrics of AI Visibility
The book introduces the five GEO metrics I designed to quantify how well your brand is represented inside AI models:
MetricMeaningWhy It MattersPRR (Prompt Recall Rate)How often your brand appears in AI answersVisibilitySAI (Semantic Accuracy Index)How correctly your brand is describedTrustSDR (Source Diversity Ratio)How many unique sources confirm your brandResilienceTAS (Trust Aggregation Score)Authority × Sentiment of those sourcesCredibilityMDI (Model Drift Index)How stable your brand remains over timeConsistency
Together, they form the GVS — Generative Visibility Score,
a single number that shows how strong your brand’s presence is inside the AI ecosystem.
Part IV – How to Optimize for GEO
The practical section of the book walks through how to apply GEO in your own business.
You’ll learn how to:
- Structure your website and metadata for machine comprehension.
- Build semantic consistency across all your channels.
- Create distributed trust signals across Wikipedia, G2, Crunchbase, press, and partner sites.
- Monitor your AI recall across ChatGPT, Claude, and Gemini.
- Respond to model drift with quarterly “visibility updates.”
Each chapter ends with a hands-on checklist you can apply immediately — even if you’ve never written a line of code.
Part V – The Future of Discovery
The final chapters zoom out.
They explore what happens when AI becomes the default interface for everything:
how people buy, research, and even trust brands.
It’s not just marketing that’s changing — it’s cognition itself.
We’re entering a world where every brand competes for representation inside machine memory.
The companies that master GEO today won’t just own the search results —
they’ll own the narrative layer of the AI web.
Why I Wrote The End of Search
I wrote this book because I saw a gap.
Everyone was still talking about “ranking higher” —
but no one was asking how AI actually understands brands.
I wanted to bridge that gap — between technology, strategy, and human meaning.
Because this shift isn’t just technical.
It’s philosophical.
We’re not optimizing for algorithms anymore.
We’re teaching machines who we are.
Who It’s For
This book is written for:
- Marketers who feel SEO’s ceiling closing in.
- Founders who want their brand to survive the next algorithm wave.
- Enterprises preparing for an AI-first content strategy.
- Anyone who wants to future-proof their visibility in the post-search era.
You don’t need a technical background you just need to care about how people (and now, machines) perceive your story.
Get the Book
The End of Search: How Generative Engines Rewrite Visibility
By Tanguy De Keyzer, Founder of Customer Impact
→ Read the foreword and first chapter for free
→ Preorder your copy on Amazon (to be released)
→ Book a GEO QuickScan for your brand

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