Measuring the Immediate Aftermath of AI Overviews in France
When Google rolled out AI Overviews in France on July 22, 2026, search marketers gained a rare opportunity to observe organic performance before and after a major algorithmic shift without confounding seasonal noises. Instead of guessing how generative features impact traffic over an extended window, a dedicated data study tracked 963 domains using aggregated Google Search Console metrics. The analytical window spanned twenty-eight days before the rollout and nine days immediately following it.
Led by data scientist Xibeijia Guan, the research revealed that less than a month after launch, generative search features began systematically eroding organic click-through rates. Domains carrying the highest exposure to generative summaries shed more than a fifth of their click-through rate in just over a week. Meanwhile, websites experiencing minimal exposure remained largely untouched. This sharp divergence confirms that the downturn stems directly from search interface changes rather than standard ranking volatility or macroeconomic shifts.
The Core Findings: Impressions Rise While Clicks Evaporate
Across the entire panel of studied websites, overall click-through rate dropped by 3.4% during the initial nine-day observation window. However, splitting the dataset by visibility uncovers a far more severe reality. For websites heavily targeted by generative features, click-through rates plunged by 23.1%—a reduction six times greater than the market average. Over 82% of heavily exposed domains suffered net CTR losses.
Crucially, this disruption did not manifest as lost rankings. Impressions across most monitored pages remained stable or even increased, aligning with previous observations regarding organic performance shifts in global markets. Content pieces continued appearing in search engine results pages just as frequently as before, yet users interacted with them far less often. Generative boxes rendered traditional blue links redundant, turning informational queries into terminal experiences where users absorb answers directly on the search page.
The Linear Relationship Between Exposure and Loss
By comparing performance changes against individual domain exposure rates, researchers established a remarkably consistent mathematical relationship. The calculated slope sits at approximately negative zero point nine. In practical terms, every single percentage point of generative search exposure translates directly into a matching point of lost click-through rate.
Site owners can leverage this metric to gauge immediate vulnerability. By pulling query exposure data from tools like Ahrefs Site Explorer, digital marketers can calculate a realistic order of magnitude for potential traffic erosion. While individual exceptions exist, this exposure rate serves as an effective risk indicator rather than an absolute verdict.
Sector Vulnerability: Why Health Content Took the Hardest Hit
Certain industries absorbed disproportionate damage based strictly on the intent behind user queries. The health sector emerged as the worst-hit vertical in the study, displaying an average generative search exposure rate of 22.2% alongside a 20.4% collapse in click-through rates.
Informational queries possessing straightforward, concise answers represent prime real estate for generative absorption. When a searcher seeks medical definitions or quick wellness guidelines, the summary satisfies the information need instantly, eliminating the motivation to visit an external destination. Conversely, queries requiring interactive tools, authenticated user accounts, complex pricing structures, or specialized human perspectives proved far more resilient against traffic loss.
Market-Wide Distribution and Broad Industry Implications
While the median market impact across all 963 monitored properties settled at a 5.7% drop in click-through rate and an 8.8% decline in raw clicks, the underlying distribution highlights severe inequality. Nearly half of all analyzed domains lost over 10% of their daily traffic, while 19% saw daily clicks plummet by more than 30%. One in every twenty domains sacrificed half its organic traffic in under ten days.
Furthermore, native French domains experienced heavier median losses than international competitors operating within the same geography. As generative query triggers continue expanding, past longitudinal tracking indicates that these penalty curves deepen over time rather than stabilizing. Search engine optimization strategies must pivot rapidly away from simple impression tracking toward query-level intent auditing and brand differentiation.