Navigating the Macro and Micro of AI Search: Introducing the AIO Index

The search landscape isn’t just evolving, it’s breathing differently. Google’s AI Overviews (AIOs) have shifted from a simple experiment to the fundamental baseline of how users find information.

For marketers, this shift often feels like flying a plane through a storm without an altimeter. When your organic traffic dips, you’re left asking: Is this a “me” problem or a “market” problem? To answer that, you need more than just a keyword tracker. You need the Adthena AIO Impact Index. Think of it as the GDP of Search – a high altitude, aggregate view of AI visibility across the US, UK, and AU.

Before diving into your specific data, you need to understand the “Search Weather.” Below is today’s (3rd March) real-time snapshot of the UK AIO landscape.

AIO Frequency Rate: AIOs appeared for 13% of all searches in the UK yesterday. That’s a 1% uplift from the day prior.

AIO Ad Penetration: There were no AIOs appearing in ads yesterday, which was consistent with the day prior.

7-Day Aggregate Market Trend: The AI Frequency Rate and AI Ad Penetration rate has remained relatively stable over the past 7 days.

To master the modern SERP, you have to look through three distinct lenses. The Index is your starting point, but the strategy is in the layers:

• The macro (The AI Impact Index): This is your daily global tracker. It tells you if Google is dialing AI up or down across the entire ecosystem.
• The industry (Market Share Reports): Once you know the weather, you need to know how it’s hitting your specific neighborhood. Our Market Share Reports reveal how AIOs are disrupting specific verticals like Finance, Retail, or Travel.

Google AI Overview visibility for Retail Apparel & Accessories US

• The micro (Domain Search Bar): This is the ground level view. By using the search bar on our homepage, you can get an instant pulse on your brand’s specific footprint and see exactly where you stand.

nike.com US Retail Apparel & Accessories January 2026

Why do we focus on the Whole Market? Most legacy tools rely on static keyword lists that quickly become outdated as AI changes user behavior.

Adthena’s AIO Impact Index isn’t biased by a single brand’s perspective; it’s a high-altitude view of the entire ecosystem. Crucially, this is the only tool tracking AIO ad penetration at a market scale. We reveal exactly how Google is blending paid and organic AI content, giving you a head start on where the monetization trends are heading.

Data is only as good as the decisions it drives. Here is how to put the Index to work:

1. Contextualize your reporting: Use the Index to explain volatility to stakeholders. Instead of panic, offer clarity: 

“While our non-branded organic traffic for ‘Insurance’ keywords dropped by 12% this month, the AIO Index shows a 15% increase in AI presence for the Finance sector. This confirms that Google is answering more queries directly in the SERP, shifting our value from ‘clicks’ to ‘brand impressions’ within the AI summary.”

2. Identify industry threats: Layer in Market Share reports to see if a specific competitor is aggressively capturing AIO citations in your vertical.

“In our latest Market Share report, we see a challenger brand now appearing in 40% of AIO citations for ‘Sustainable Footwear,’ despite them having lower traditional organic rankings. They are winning by using structured FAQ schemas that Google’s LLM prefers.”

3. Audit your domain: Use our homepage search bar to verify if your site is appearing in AI results or if you’re facing a visibility gap that needs immediate attention.

“After running our domain through the homepage search bar, we found a Citation Gap: we rank #1 for ‘Enterprise CRM,’ but we are completely absent from the AI Overview. This indicates our content is too dense for the LLM to summarize, and we need to add a concise TL;DR summary block to that page.”

The search landscape is shifting, but it is no longer a black box. Adthena provides the ladder of data you need to climb out of the dark – from the global market view down to your specific brand’s performance.

Ready to see where you stand?

Check today’s AI Impact Index for the macro view, then see how your industry is evolving with our Market Share reports.