--- title: "SEO & GEO Insights by Justin Hà" description: "Explore expert articles on SEO strategy, GEO, and AI visibility. Real case studies, tactics, and insights from Justin Hà's campaigns." url: "https://justinha.info.vn/blogs/page/2/" --- The Blog # Insights on *SEO & GEO* Deep-dives into search, AI visibility, and what it takes to rank in the age of AI answers. [![What Is a SEO Log File? Guide for AI Bots & GEO (2026)](https://justinha.info.vn/wp-content/uploads/2026/03/what-is-seo-log-file-768x432.jpg)](https://justinha.info.vn/geo/what-is-seo-log-file/) [GEO](https://justinha.info.vn/category/geo/) ## [What Is a SEO Log File? Guide for AI Bots & GEO (2026)](https://justinha.info.vn/geo/what-is-seo-log-file/) If you manage a website, your server is quietly recording every single visit from real users and from bots. Those records are… [Justin Hà](https://justinha.info.vn/about/) · Mar 28, 2026 · 12 min read [Read](https://justinha.info.vn/geo/what-is-seo-log-file/) [![What Is LLMs.txt, LLMs-full.txt?](https://justinha.info.vn/wp-content/uploads/2026/02/llmstxt-llmsfulltxt-catstxt-768x429.jpg)](https://justinha.info.vn/geo/what-is-llms-txt-llms-full-txt-cats-txt/) [GEO](https://justinha.info.vn/category/geo/) ## [What Is LLMs.txt, LLMs-full.txt?](https://justinha.info.vn/geo/what-is-llms-txt-llms-full-txt-cats-txt/) These two files are a direct communication line to AI systems. They tell ChatGPT, Perplexity, Google AI Overviews, and Gemini exactly how… [Justin Hà](https://justinha.info.vn/about/) · Feb 25, 2026 · 10 min read [Read](https://justinha.info.vn/geo/what-is-llms-txt-llms-full-txt-cats-txt/) [![GEO Case Study: Achieving 80% Brand Visibility across ChatGPT & AI Mode prompts within 3 months](https://justinha.info.vn/wp-content/uploads/2026/02/geo-case-study-768x432.jpg)](https://justinha.info.vn/case-study/holiday-inn-saigon-airport/) [SEO/GEO Case Study](https://justinha.info.vn/category/case-study/) ## [GEO Case Study: Achieving 80% Brand Visibility across ChatGPT & AI Mode prompts within 3 months](https://justinha.info.vn/case-study/holiday-inn-saigon-airport/) In hospitality, discovery has always been trust-driven. Before booking, guests ask, friends, review platforms, concierges. Today, an increasing number ask AI directly,… [Justin Hà](https://justinha.info.vn/about/) · Feb 25, 2026 · 7 min read [Read](https://justinha.info.vn/case-study/holiday-inn-saigon-airport/) [![SEO Case Study: How a luxury brand scaled organic and AI visibility through informational content?](https://justinha.info.vn/wp-content/uploads/2026/02/gsc-last-6months-768x294.png)](https://justinha.info.vn/case-study/tsar-carpets/) [SEO/GEO Case Study](https://justinha.info.vn/category/case-study/) ## [SEO Case Study: How a luxury brand scaled organic and AI visibility through informational content?](https://justinha.info.vn/case-study/tsar-carpets/) Luxury goods present a unique SEO challenge. The audience is high-intent but low-volume, and increasingly, buyers in the luxury segment, interior designers,… [Justin Hà](https://justinha.info.vn/about/) · Feb 24, 2026 · 8 min read [Read](https://justinha.info.vn/case-study/tsar-carpets/) [![What Is GEO (Generative Engine Optimization) and Why Your Business Can’t Afford to Ignore It](https://justinha.info.vn/wp-content/uploads/2026/02/geo-service-768x768.jpg)](https://justinha.info.vn/geo/what-is-generative-engine-optimization/) [GEO](https://justinha.info.vn/category/geo/) ## [What Is GEO (Generative Engine Optimization) and Why Your Business Can’t Afford to Ignore It](https://justinha.info.vn/geo/what-is-generative-engine-optimization/) Generative Engine Optimization (GEO) is the practice of structuring digital content and online presence so that AI-powered search platforms, such as ChatGPT,… [Justin Hà](https://justinha.info.vn/about/) · Feb 24, 2026 · 9 min read [Read](https://justinha.info.vn/geo/what-is-generative-engine-optimization/) [![SEO Case Study: How “Trending Nodes” scaled 94K Discover clicks and +784% direct bookings for a Hair Salon?](https://justinha.info.vn/wp-content/uploads/2026/01/hair-salon-peak-768x283.png)](https://justinha.info.vn/case-study/lady-and-the-hair/) [SEO/GEO Case Study](https://justinha.info.vn/category/case-study/) ## [SEO Case Study: How “Trending Nodes” scaled 94K Discover clicks and +784% direct bookings for a Hair Salon?](https://justinha.info.vn/case-study/lady-and-the-hair/) Hair salons are one of the most competitive local SEO verticals. Every market has dozens of them, most fighting over the same… [Justin Hà](https://justinha.info.vn/about/) · Jan 18, 2026 · 6 min read [Read](https://justinha.info.vn/case-study/lady-and-the-hair/) [![SEO/GEO Case Study: How to win Local SEO and GEO for a brand-new website with low budget?](https://justinha.info.vn/wp-content/uploads/2026/01/local-restaurant-768x284.png)](https://justinha.info.vn/case-study/cucina-luca/) [SEO/GEO Case Study](https://justinha.info.vn/category/case-study/) ## [SEO/GEO Case Study: How to win Local SEO and GEO for a brand-new website with low budget?](https://justinha.info.vn/case-study/cucina-luca/) Cucina Luca launched its website in April 2025 with zero domain authority, no backlink profile, and no search history for Google or… [Justin Hà](https://justinha.info.vn/about/) · Jan 18, 2026 · 6 min read [Read](https://justinha.info.vn/case-study/cucina-luca/) ## Posts pagination [← Earlier](https://justinha.info.vn/blogs/) [1](https://justinha.info.vn/blogs/) 2