Introduction: The value of ranking first in search has changed
Since the latter half of 2025, cases where "AI Overviews" appear at the very top of Google search results have surged. Because AI directly generates answers tailored to user search intent, a phenomenon has emerged where click-through rates (CTR) for pages traditionally ranking first in search results have dropped sharply.
Overseas SEO studies have also reported data showing that the CTR of the top organic search result dropped by up to 58% for search queries where an AI Overview appeared.
This is not a temporary trend. Google has continued to expand the display scope of AI Overviews well into 2026, and this direction was further reinforced in the March 2026 core update.
In other words, the traditional premise of SEO—that raising search rankings will attract visitors—is collapsing.
So, what should corporate web managers and marketers do? In this article, we explain five concrete measures down to the implementation level to adapt to the AI Overview era.
What is an AI Overview?
An AI Overview is an AI-generated answer section that Google displays at the very top of search engine results pages.
While conventional search results displayed a list of "ten blue links," AI Overviews generate direct answers to users' questions. Although links to the web pages used as sources are also displayed, an increasing number of users are satisfied solely with the AI Overview's response and do not click through to individual websites.
Characteristics of queries where they appear
AI Overviews are particularly prone to appear for the following types of search queries:
- Informational: "What is ...", "How to ...", "Benefits of ..."
- Comparative: "A vs B which is better", "Recommended ..."
- How-to: "How to do ...", "Steps for ..."
Conversely, AI Overviews tend to appear relatively less frequently for searches with specific brand names (navigational queries) and searches with high purchase intent (transactional queries).
Measure 1: Create content that gets cited in AI Overviews
AI Overviews do not create answers from scratch. They generate answers by referencing and citing information from existing web pages. In other words, by being selected as an information source for an AI Overview, there is a chance your site's link will be displayed.
Four common traits of content that is easily cited
1. Leading with a clear conclusion
AI Overviews favor content from which concise answers to questions can be readily extracted. State your conclusions clearly at the beginning of an article or at the start of each section.
❌ 悪い例:
「SEOについてはさまざまな意見がありますが、
一般的に言われていることとしては…」
✅ 良い例:
「SEOで最も重要なのは、ユーザーの検索意図に
正確に応えるコンテンツを作ることです。」
2. Structured information
Bullet points, numbered lists, and tabular data are formats from which AI can easily extract information. Consciously structure formulaic information such as steps, comparisons, and pros and cons.
3. Including primary information and proprietary data
What AI finds valuable to reference is proprietary information not found on other sites. By actively incorporating primary information such as your company's case studies, survey data, and experimental findings, you increase the likelihood of being selected as a citation source.
4. Clear E-E-A-T (Experience, Expertise, Authoritativeness, Trustworthiness)
AI tends to prioritize content that clearly specifies author credentials, supervisory details, and corporate information as a highly trustworthy information source.
Measure 2: Properly implement structured data (JSON-LD)
Structured data is metadata designed to accurately convey the meaning of content to both search engines and AI. When AI Overviews organize and cite information, structured data also serves as a crucial signal.
Minimum structured data you should implement
Article (article pages)
{
"@context": "https://schema.org",
"@type": "Article",
"headline": "記事タイトル",
"description": "記事の説明文",
"author": {
"@type": "Person",
"name": "著者名",
"url": "著者プロフィールURL"
},
"publisher": {
"@type": "Organization",
"name": "会社名",
"logo": {
"@type": "ImageObject",
"url": "ロゴURL"
}
},
"datePublished": "2026-03-23",
"dateModified": "2026-03-23",
"image": "アイキャッチ画像URL",
"mainEntityOfPage": {
"@type": "WebPage",
"@id": "記事URL"
}
}
FAQPage (frequently asked questions)
When you have FAQ-style content, data indicates that adding FAQPage structured data increases the citation rate in AI Overviews.
{
"@context": "https://schema.org",
"@type": "FAQPage",
"mainEntity": [
{
"@type": "Question",
"name": "AI Overviewとは何ですか?",
"acceptedAnswer": {
"@type": "Answer",
"text": "Google検索結果の最上部に表示される、AIが生成した回答セクションです。"
}
}
]
}
BreadcrumbList (breadcrumbs)
Breadcrumb structured data is also vital for ensuring that AI correctly understands your site's structure.
How to validate implementation
You can verify whether structured data is correctly recognized using Google's Rich Results Test. If there are errors or warnings, resolve them.
Measure 3: A content strategy predicated on zero clicks
With the spread of AI Overviews, the proportion of "zero-click searches" that conclude entirely on the search results page is increasing. Accepting this reality, it is necessary to formulate strategies to still bring visitors to your own site.
Three approaches
Approach 1: Provide depth that AI cannot answer
While AI Overviews excel at overview-level answers, they cannot adequately cover concrete implementation steps, case studies, and industry-specific expertise.
By designing article structures into a two-layer model—overview (consumed in the AI Overview) → in-depth exploration (readable only by visiting the site)—you can be cited in AI Overviews while still securing traffic from users who want to learn the details.
Approach 2: Increase branded searches
Searches that are less susceptible to AI Overviews are "branded searches" (searches using brand names). Build pathways that encourage people to search for "[your brand name] + [topic]" by raising brand awareness across channels other than search, such as social media, newsletters, seminars, and YouTube.
Approach 3: Shifting search intent
Because general informational queries such as "What is ..." are easily captured by AI Overviews, target more niche and specific long-tail keywords.
❌ AI Overviewに取られやすい:
「Google Workspace とは」
✅ 狙い目のロングテール:
「Google Workspace 50人規模 導入手順 費用」
Measure 4: Solidify technical SEO fundamentals
Even in the AI Overview era, the importance of technical SEO has actually increased. This is because the technical quality of a site serves as an evaluation metric when AI selects its information sources.
2026 Core Web Vitals standards
In 2026, Core Web Vitals shifted from being factors that create competitive advantage to becoming the minimum baseline that must be cleared. Sites that have not addressed them risk facing ranking penalties.
| Metric | Threshold | Common issues |
|---|---|---|
| LCP(Largest Contentful Paint) | 2.5 seconds or less | Unoptimized images, slow server response |
| INP(Interaction to Next Paint) | 200 milliseconds or less | Heavy JavaScript, inefficient event handlers |
| CLS(Cumulative Layout Shift) | 0.1 or less | Images/ads without specified dimensions, web font loading |
Actionable improvement measures you can take immediately
- Image optimization: Converting to WebP/AVIF formats, explicitly defining
width/heightattributes, applying lazy loading (loading="lazy") - JavaScript optimization: Removing unnecessary third-party scripts, executing code splitting
- Web font optimization: Configuring
font-display: swap, switching to self-hosting (eliminating dependencies on external CDNs) - Faster server response: Leveraging CDNs, reviewing caching strategies
Measure 5: The new concept of GEO (Generative Engine Optimization)
While conventional SEO was about optimizing for search engine algorithms, GEO (Generative Engine Optimization) is a new mindset focused on optimizing for content that AI wants to reference and cite.
Key focal points in GEO
Citability
Whether AI will want to choose your content as a citation source when generating an answer. Specifically:
- Descriptions based on facts and data
- Clear attribution of sources
- Information substantiating the author's expertise
Uniqueness
Simply repeating generic information that AI has already trained on offers no citation value. It is critical to reflect data, experiences, and perspectives that only your company possesses in your content.
Examples:
- Your company's adoption case studies and concrete metrics
- Practical know-how accessible only to industry insiders
- Results from proprietary surveys and questionnaires
Multimodal support
By providing information in multiple formats—such as diagrams, tables, charts, and videos in addition to text—you make it easier for AI to cite your content across diverse contexts.
Conclusion: Act now without fearing change
Here is a summary of SEO measures for the AI Overview era.
| Measure | Priority | Difficulty | Speed of impact |
|---|---|---|---|
| Creating content cited by AI Overviews | High | Medium | Medium |
| Implementing structured data | High | Low | High |
| Content strategy predicated on zero clicks | High | High | Low |
| Solidifying technical SEO fundamentals | Medium | Medium | High |
| Adopting GEO concepts | Medium | High | Low |
The easiest place to start is implementing structured data. Simply adding Article or FAQPage structured data to existing content can improve evaluations from AI.
Over the medium to long term, a content strategy centered on primary information and increasing brand awareness become critical. Rather than relying solely on search engines for traffic, build an audience acquisition foundation combining multiple channels, such as social media, newsletters, and seminars.
AI Overviews are not a "threat"—the rules of the game have simply changed. Companies that adapt quickly to this shift will dominate organic customer acquisition in the next era.
At GleamHub, we support SEO initiatives and website technical enhancements tailored to the AI Overview era. Whether you want to know how your site is affected by AI Overviews or consult on structured data implementation, please feel free to reach out to us.









