Last Updated on 2025 年 8 月 17 日 by 総合編集組
Unveiling the 2025 Google Core Updates: A Comprehensive Guide to Navigating the AI-Driven Search Landscape
Introduction
The 2025 Google core updates, rolled out in March and June, have reshaped the search landscape, integrating artificial intelligence (AI) and prioritizing user-centric content. These updates, part of Google’s ongoing mission to enhance search relevance and quality, have introduced significant changes, particularly with the rise of AI Overviews and the reinforcement of E-E-A-T (Experience, Expertise, Authoritativeness, Trustworthiness) principles. This summary distills the key trends, impacts, and actionable strategies for bloggers and content creators to thrive in this evolving environment, ensuring their websites remain competitive and visible to global audiences.
March 2025 Core Update: The Surge of AI Overviews
Launched from March 13 to 27, 2025, the first core update of the year caused notable ranking fluctuations across various industries. Described as a “typical” broad ranking adjustment, its most transformative feature was the exponential increase in AI Overviews, Google’s AI-generated answer panels displayed at the top of search results. These summaries, which provide concise answers to queries, saw a staggering 528% increase in entertainment-related searches and 380% in restaurant and travel queries.
While AI Overviews boost visibility for cited content, they pose a challenge by reducing click-through rates (CTR), with first-position organic results dropping from 7.3% to 2.6%—a 34.5% relative decline. Websites like Quora experienced traffic declines, while those with structured, high-quality content saw gains due to frequent AI citations. Content creators must now optimize for AI extraction by using clear headings, lists, and unique insights while encouraging clicks through interactive elements like videos or exclusive data.
June 2025 Core Update: A Global Recalibration
The second update, spanning June 30 to July 17, 2025, was a global recalibration affecting all content types, regions, and languages. Lasting three weeks, it triggered “extremely high” ranking volatility, with some websites losing 20-40% of organic traffic and others, particularly in arts, entertainment, health, and telecom, gaining visibility. Google emphasized delivering “relevant and satisfying content,” reinforcing the importance of E-E-A-T for Your Money Your Life (YMYL) sectors like health and finance. The update underscored that ranking drops are not punitive but reflect Google’s preference for more helpful content elsewhere. Technical factors, such as poor page experience (e.g., slow loading times), also impacted rankings, highlighting the need for a holistic approach combining content quality and technical optimization.
AI-Driven Search: A Paradigm Shift
The rise of AI Overviews and the experimental AI Mode (powered by Gemini 2.5) signals Google’s transition from a link-based to an answer-based engine. AI Overviews, now available in over 100 countries including Taiwan, reduce the need for users to visit websites, with nearly 40% of AI-related queries resulting in zero-click searches. AI Mode, currently in testing, allows multi-turn queries and multimodal inputs, further shifting traffic to Google’s interface. To adapt, creators should use Schema Markup to enhance AI comprehension, produce authoritative content to become trusted sources, and explore formats like short videos or interactive tools to align with multimodal search trends.
SEO Strategies for 2025
E-E-A-T remains central, particularly for YMYL content. Creators should showcase real-world experience (e.g., product reviews, travel itineraries), leverage expert credentials, cite authoritative sources, and ensure website trustworthiness through HTTPS, clear contact info, and positive reviews. Content must be human-centric, offering in-depth, unique insights rather than keyword-stuffed or shallow material. Google penalizes low-value, AI-generated content unless carefully edited for quality. Technical optimization, including Core Web Vitals (e.g., LCP under 2.5 seconds, minimal CLS), mobile-friendliness, and structured data, is critical to maintain rankings. A well-organized internal linking structure also boosts topical authority and crawlability.
Leveraging Google Search Console
The revamped Search Console “Insights” report, launched on June 30, 2025, provides a dashboard for tracking clicks, impressions, and trending queries. Bloggers should monitor this data post-update to identify underperforming pages, diagnose indexing issues, and uncover content opportunities. Regular analysis ensures rapid adaptation to algorithmic shifts, transforming Search Console into a proactive tool for data-driven SEO decisions.
Industry Reactions and Opportunities
The updates sparked widespread discussion in digital marketing circles, with concerns over traffic volatility and zero-click searches impacting ad revenue. However, they also reward creators who prioritize quality, as Google’s crackdown on low-value content elevates original, insightful work. Diversifying traffic sources—through social media, email newsletters, or video platforms—reduces reliance on organic search. By building brand authority and embracing AI-friendly formats, creators can mitigate challenges and capitalize on new opportunities.
Conclusion
The 2025 Google core updates mark a pivotal shift toward AI-driven, user-focused search. Bloggers must prioritize high-quality, human-centric content, optimize for AI extraction, enhance user experience, and leverage data tools like Search Console. By diversifying traffic and adapting to AI trends, content creators can not only survive but thrive in this dynamic search landscape, ensuring their websites resonate with global audiences and remain competitive in 2025 and beyond.
