Author · Zurich
Tenzin Langdun SEO & GEO expert.
Co-Founder of Hierarchy
Tenzin Langdun is a co-founder of Hierarchy, where he leads SEO and GEO: how visible companies are in Google, in Google's AI answers and in assistants such as ChatGPT, Gemini and Claude.
Profile
He leads the agency's own data studies, including the Zurich AI Visibility Study of 1,515 AI answers about 5,110 companies. The findings go into every SEO and GEO measure Hierarchy ships.
He brings over 10 years of marketing experience across strategy, paid acquisition and SEO. He has worked at KPMG, EY, Siemens, Adnovum and LGT, in AI, cybersecurity, audit and consulting, and in software engineering for the insurance sector and for banking and finance. Today he also builds enterprise software and process automation for financial institutions.
He holds a BSc from ZHAW and an MSc in Artificial Intelligence from the University of Bath. His research on AI-based thyroid cancer detection was published in Scientific Reports (Nature Portfolio) in 2024 and won the Siemens Excellence Award 2024 and the ZHAW Lab Sciences Award 2024.
PublicationDeep learning-based cell segmentation for rapid optical cytopathology of thyroid cancer ↗︎
News
Articles by Tenzin Langdun
58 articles
- Agentic Commerce: When AI Agents Go Shopping. What Swiss Online Stores Need to Know Now (2026)
- Creating Shopify Products Automatically Instead of by Hand: How a Modern Store's Catalogue Is Built
- Shopify SEO and GEO: How Your Online Store Gets Found in Google, AI Mode and ChatGPT (with Measurement)
- Switching to Shopify: Migrating from Magento, WooCommerce, Shopware & Co. in Switzerland (2026)
- Which GEO Agency Is Best for You? Large Agency, Boutique or Freelancer, and 9 Warning Signs (2026)
- Google AI Overviews in Switzerland: Which Searches Trigger Them and Who They Cite (2026 Measurement)
- Digital PR for AI Visibility: How to Get Into the Sources ChatGPT Cites
- SEO Agency or GEO Agency? Who Gets ChatGPT to Recommend You (2026)
- AI Visibility in B2B: How Industrial Firms, Machine Builders and B2B Software Get Recommended in ChatGPT
- Marketing Without an In-House Team: What SMEs Can Outsource and Which Model Fits
- GPT-6.1 Sol vs. Claude Opus 5.5 vs. Gemini 4 Argon: The AI Models in October 2026
- One Year of Google AI Mode in Switzerland: Who It Recommends and Where It Gets the Names
- ChatGPT Ads in Switzerland: Cost, Setup and Who It Pays Off For (2026)
- Real Estate Agent Marketing in Zurich 2026: Why ChatGPT, Gemini and Google AI Mode Recommend Your Agency, or Don't
- Aesthetic Medicine Marketing in Zurich 2026: Why ChatGPT, Gemini and Google AI Mode Recommend Your Clinic, or Don't
- Bathroom and Kitchen Renovation Marketing in Zurich 2026: Why ChatGPT, Gemini and Google AI Mode Recommend Your Business, or Don't
- HVAC and Plumbing Marketing in Zurich 2026: Why ChatGPT, Gemini and Google AI Mode Recommend Your Building Services Firm, or Don't
- Running AI Visibility In-House: 8 Providers That Work on a "Do It With Me" Basis
- Law Firm Marketing Zurich: How AI Recommends Lawyers
- Wealth Manager Marketing Zurich: Who AI Recommends
- AI Visibility for SaaS: Buy a Monitoring Tool or Hire an Agency?
- IT Support Marketing Zurich: Who AI Recommends to SMEs
- GPT-6 Astra and Archicad in 2026: What Actually Connects, and Why 73 API Commands Cannot Build a Single Wall
- AI Course, AI Workshop or Certificate Programme: Which Format for Which Team?
- An Internal AI Policy That Fits on One Page
- AI Training for Swiss Municipalities: What Is Different from the Private Sector
- Architecture Firm Marketing Zurich 2026: 52 Percent of AI Recommendations Come From the Model's Memory
- GPT-6 Astra vs. Claude Fable 5.1: Benchmarks, a Blender Test and One Week in Practice (2026)
- ChatGPT or Claude for Architects? Which AI Fits Which Workflow, and Why Astra Is the Choice for 3D (2026)
- AI Workshop FAQ 2026: The 13 Questions Employees Ask Most, Answered
- The 5 Best AI Workshop Providers in Zurich 2026
- Mailchimp and Data Protection in Switzerland 2026: Is Mailchimp revDSG Compliant? The 9-Point Checklist for SMEs
- Accounting Firm Marketing Zurich 2026: Why ChatGPT, Gemini and Google AI Mode Recommend Your Firm, or Not
- The 5 Best Marketing Agencies in Zurich 2026
- Dental Marketing Zurich 2026: Why ChatGPT, Gemini and Google AI Mode Recommend Your Practice, or Not
- Physiotherapy Marketing Zurich 2026: 69 Percent of AI Recommendations Come From the Practice Website
- The 5 Best SEO, GEO & AEO Agencies in Zurich 2026
- Buying backlinks in Switzerland: what you actually get — and what Google really says
- How Do I Get Recommended by ChatGPT? Turning a Lucky Referral Into a Repeatable Channel
- Case Study: SEO, AEO and GEO for a Solar Provider – From Page 2 to Positions 2–4 in Six Months
- AI Workshops at Work: Why Most of Them Fizzle Out — and What One That Works Looks Like
- How to Prompt Correctly in Claude Code: Effort Levels, Verification Loops and What to Delete From Your Prompts
- Measuring AI Visibility: What to Track – and What the Management Report Should Look Like
- How to Choose an SEO Agency: 7 Criteria for Swiss SMEs
- Fable 5 vs. GPT-5.6 Sol vs. Kimi K3: Benchmarks and a Hands-On Test (2026)
- Choosing a Marketing Agency: Checklist, Red Flags and First-Call Questions
- Process Automation for SMEs in Switzerland: The Practical Guide
- ChatGPT vs. Claude for SMEs: Which AI Fits Which Task?
- How Much Time Does AI Really Save? Concrete Examples for SMEs
- Introducing ChatGPT at Work: 7 Use Cases for Swiss SMEs
- AI and Data Protection in Switzerland: What SMEs Must Know About the revDSG and EU AI Act
- The Skills Shortage in Switzerland: How Automation Relieves SMEs
- Case Study: Migrating from Magento 2 to Shopify with a Central Product Database (PIM) and AI Agents
- Automated Lead Generation and Reactivation for B2B SMEs: From First Signal to Qualified Meeting
- Case Study SEO Content Engine: How We Automate Content Creation with AI Without Giving Up Quality
- Generative Engine Optimization (GEO): What GEO Is and How It Differs from SEO (2026)
- EU AI Act for Swiss SMEs: What Applies Now and What Comes Next
- AI Agents in Business: The Practical Guide for Swiss SMEs (2026)