What Is Google-CloudVertexBot? The Vertex AI Crawler and robots.txt
Google Cloud's Vertex AI Search crawler, explained: what it fetches, why it hit your logs, and how to write the robots.txt rule.
Topic
AI Overviews
A collection of 5 issues
How to Add Google's Preferred Sources Button to Your Site
Google's new interactive preferred sources button ships as two lines of HTML. Where it goes, what the data-theme and data-lang attributes do, who qualifies, and what the preferred badge actually changes in Top Stories, AI Mode, and AI Overviews.
llms.txt v2 (August 2026): how to pass Lighthouse's llms.txt audit
llms.txt v2 (modified August 10, 2026) adds link-relation discovery and blesses both .md URL forms. Lighthouse's agentic-browsing audit fails the file only on a server error - a 404 is Not Applicable.
Why Is Your Site Not Showing in Google AI Overviews?
A site can rank in regular Search yet stay absent from AI Overviews. The cause is almost always one of five eligibility blockers, and one is a Search Console toggle most guides never mention.
FAQPage Schema: The Highest-ROI Signal for AI Overviews
The FAQ rich result is gone, but the markup is now a higher-ROI answer-engine citation signal. What changed, and what to keep.