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SEO vs GEO as Google expands AI Mode

Published on December 8, 2025
SEO vs GEO as Google expands AI Mode

The landscape of online search is undergoing a profound transformation as Google expands its AI Mode, leveraging advanced artificial intelligence to redefine how users find and interact with information. This shift is particularly significant for digital marketers and content creators, who must now navigate the evolving dynamics between traditional Search Engine Optimization (SEO) and the emerging Generative Engine Optimization (GEO).

Google’s AI Mode, powered by Gemini 2.0 and Gemini 2.5 Pro, integrates sophisticated reasoning and multimodal capabilities into search results. This integration results in AI-generated summaries, or AI Overviews, which are increasingly prevalent in search queries, fundamentally altering user behavior and how content is surfaced. Understanding the interplay between SEO and GEO in this new environment is crucial for maintaining and enhancing digital visibility.

Understanding Google’s AI Mode and Its Impact on Search

Google’s AI Mode represents a groundbreaking evolution in search technology. Unlike traditional search that primarily returns links to websites, AI Mode synthesizes information from multiple sources into comprehensive, context-aware summaries. This multimodal system supports inputs ranging from text and voice to images and PDFs, offering dynamic features like Canvas for organizing data and Dialog Continuity for seamless follow-ups.

With over 1.5 billion monthly users adopting AI Mode, its reach is vast and growing rapidly. By March 2025, about 13.14% of search queries triggered AI summaries, nearly doubling from just a few months prior. This surge highlights the swift integration of AI in everyday search experiences and the need for content to adapt accordingly.

The multimodal and reasoning capabilities of Gemini underpin these changes, enabling Google to deliver richer, more nuanced answers. This advancement challenges traditional SEO methods, which focus on ranking pages rather than optimizing content to be cited within AI-generated responses.

The Declining Effectiveness of Traditional SEO in the AI Era

Traditional SEO has long been the cornerstone of digital marketing, emphasizing keyword optimization, backlinks, and rankings on search engine result pages (SERPs). However, the rise of AI Overviews is disrupting this model. Studies show that the presence of AI-generated summaries has led to a 34.5% drop in click-through rates (CTR) for top-ranking content within a single year.

More strikingly, when AI Overviews appear, the CTR for the first organic position can drop by as much as 64%. This decline indicates that users increasingly find their answers directly in the search interface, reducing traffic to individual websites. Consequently, relying solely on conventional SEO tactics is no longer sufficient to drive meaningful engagement.

Despite these trends, Google asserts that standard SEO practices remain valid for ranking in AI Overviews. Gary Illyes from Google confirmed that specialized techniques such as AEO (Answer Engine Optimization) or GEO are unnecessary for inclusion in AI-generated summaries. This stance suggests that SEO fundamentals are still relevant but must be adapted to the new AI-influenced search landscape.

What is Generative Engine Optimization (GEO)?

Generative Engine Optimization (GEO) emerges as a complementary strategy designed specifically for the AI-driven search ecosystem. Rather than focusing on traditional rankings alone, GEO aims to optimize content so it is more likely to be retrieved and cited by AI systems within their generated responses.

Key aspects of GEO include structuring content with clear, well-organized explanations and providing direct, concise answers to common questions. This approach enhances the chances of AI models recognizing and referencing the content accurately, thereby increasing brand visibility in AI Overviews.

Moreover, GEO emphasizes the use of structured data formats such as Schema.org and the establishment of credibility through authoritative content. These elements improve the likelihood that content will be included and properly attributed in AI summaries, which often cite multiple sources, up to three or more in 88% of cases as of March 2025.

How GEO Complements Traditional SEO

It is important to note that GEO is not a replacement but an evolution of traditional SEO. While SEO focuses on optimizing for search algorithms and user intent to improve rankings, GEO addresses the nuances of AI content generation and citation.

By combining SEO and GEO strategies, content creators can maximize their reach both in organic search results and within AI-generated summaries. This dual approach ensures that a brand’s content is not only discoverable but also authoritative and structured in a way that AI systems favor.

In practice, this means maintaining strong SEO fundamentals, such as keyword research, backlink building, and user experience, while also adapting to GEO by enhancing content clarity, using structured data, and focusing on AI-friendly formats.

The Growing Importance of Diverse and Authoritative Content

AI Overviews frequently cite multiple sources to provide well-rounded answers, with 88% of summaries referencing three or more sources. This trend underscores the need for content diversity and authority in digital marketing strategies.

Publishers who produce diverse, credible, and well-structured content increase their chances of being included in AI summaries. This is particularly beneficial for smaller publishers, who can leverage GEO strategies to boost their presence in AI-driven responses by up to 115%, even as top-ranked sites face a 30% decline in visibility.

The emphasis on citations and source diversity means that content creators must focus on building trust and authority within their niches, producing high-quality information that AI systems can confidently reference.

Practical GEO Strategies for Content Optimization

To succeed with GEO, content must be optimized for AI retrieval and attribution. This involves providing clear, direct answers, using simple language, and structuring information logically. Clear ings, bullet points, and concise paragraphs aid AI in processing and citing content.

Implementing structured data markup like Schema.org helps search engines understand content context, enhancing the likelihood of inclusion in AI-generated answers. Credibility signals such as expert authorship, citations, and trustworthy backlinks also play a critical role.

Content creators should also consider the multimodal capabilities of AI Mode by incorporating images, videos, and other media to enrich the information provided, aligning with Google’s emphasis on multimodal input and contextual understanding.

Looking A: SEO, GEO, and the Future of Search

As Google’s AI Mode continues to expand, the integration of AI in search will only deepen. This evolution requires marketers and publishers to embrace a hybrid approach, blending traditional SEO with GEO to maintain and grow digital visibility.

The rapid adoption of AI Mode, already surpassing 1.5 billion users monthly, signals a major shift in how content is consumed and valued. Those who adapt by optimizing for both human users and AI systems will remain competitive in a landscape where AI summaries shape much of the user experience.

Ultimately, SEO and GEO are two sides of the same coin in the AI-driven era of search. Together, they form a comprehensive strategy that addresses the complexities of modern information discovery and ensures a brand’s voice is heard across all facets of search.

In conclusion, the expansion of Google’s AI Mode has ushered in a new era for search optimization. While traditional SEO remains foundational, the rise of AI-generated summaries demands a complementary focus on GEO strategies to optimize content for AI citation and retrieval.

By understanding and implementing both SEO and GEO best practices, content creators and marketers can navigate this evolving landscape effectively. Embracing this dual approach will be key to sustaining visibility, driving engagement, and thriving in the rapidly changing world of AI-powered search.