Google Search

Blueprint of Google's two AI search systems: classic index feeding AI Overviews on left, AI Mode platform with fan-out query tree on right

Google Concedes AI Overviews and AI Mode Run on Separate Stacks

Google confirmed on May 4 that AI Overviews and AI Mode run on separate infrastructure. AI Overviews sits on top of the classic search index with a small fan-out and a summary layer. AI Mode runs on its own bigger platform, with longer queries, longer reasoning, and a much larger

Schematic of search index pages graying out as AI Overview answer cards capture queries, with Crawled-currently-not-indexed labels marking deindexed URLs.

Google Quietly Deindexed the Pages AI Overviews Already Cost the Click

On April 30, 2026, former Googler Pedro Dias asked SEOs on X whether anyone else was seeing higher random URL deindexing since early April, and John Mueller dismissed it the same day with "nothing exceptional there." The pages getting dropped share one trait Mueller did not address: they

Blueprint diagram of a Google SERP with an AI Overview box at top, a 38% downward arrow, and twin satisfaction gauges showing identical readings.

The First Randomized AI Overviews Study Pinned the Click Loss at 38%

Saharsh Agarwal (Indian School of Business) and Ananya Sen (Carnegie Mellon) ran the first randomized field experiment on Google's AI Overviews, recruiting 1,065 US desktop Chrome users between January and February 2026. Hiding AI Overviews raised outbound clicks from 0.38 to 0.61 per search, a

Schematic blueprint showing Google AI Overviews box at top of search results page with bounce-click loop arrow returning to the search bar above a declining CTR chart

Liz Reid Repeated Google's 'Bounce Clicks' Defense Without Showing the Data

Liz Reid, Google's head of Search, has used the phrase "bounce clicks" three times since August 2025 to explain AI Overview traffic losses, most recently on Bloomberg's Odd Lots on April 23, 2026. She shared no supporting data in any appearance. Independent studies measured

Blueprint-style diagram of search engine results with declining click-through rate bars and category data breakdown charts

AI Overviews Cut Clicks by 58%. The Damage Isn't Spread Evenly.

The first major Ahrefs study in April 2025 put the AI Overviews click loss at 34.5%. The December update pushed it to 58%. If you run SEO for a health publisher or a B2B SaaS blog, that number probably matches what you've been watching in Search Console

Blueprint-style diagram of search results page with AI overview box pushing organic listings down and declining CTR graph

AI Overviews Took 265 Million Monthly Clicks in One Country. The Category Breakdown Tells a Different Story.

SISTRIX dropped their March 2026 AI search analysis last week, and the headline stat hit hard: 265 million organic clicks per month are disappearing in the German market alone because of AI Overviews. Position 1 CTR collapsed from 27% to 11% when an AI Overview appears. That is a 59%

Blueprint-style technical diagram showing staged algorithm deployment across interconnected search systems

The First Week of a Core Update Is Just Noise. Google Finally Said So.

Google's John Mueller explained on Bluesky last week why core updates take weeks to finish: "Since these are significant, broad changes to our search algorithms and systems, sometimes they have to work step-by-step, rather than all at one time." That sounds like a straightforward engineering detail.