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Google AI Maxの全面展開:検索広告においてキーワードが王座を失った理由

Google's AI Max Takeover: Why Keywords Just Lost Their Throne in Search Advertising

Googleが2026年9月よりDSAをAI Maxへ自動移行すると発表。キーワード主権の終焉と、AI時代の検索広告の新たな競争軸を読み解く。
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Google’s announcement on April 15, 2026 looks, at first glance, like a routine interface change. It is not. Google said that, starting in September 2026, eligible Search campaigns still using Dynamic Search Ads, automatically created assets, or the campaign-level broad match setting will be automatically upgraded to AI Max. New DSA campaigns will no longer be creatable in Google Ads, Google Ads Editor, or the Google Ads API, and Google expects the migration of eligible campaigns to finish by the end of September. For DSA users, dynamic ad groups will be converted into standard ad groups, with historical settings and data carried over. In practical terms, a format once designed to supplement keyword campaigns is being absorbed into a broader AI system. (blog.google)

The deeper story is architectural. AI Max, introduced in beta in May 2025, is not merely “automation”; it is a bundle of search term matching, text customization, and final URL expansion. Google says advertisers activating AI Max in Search campaigns typically saw 14% more conversions or conversion value at a similar CPA or ROAS, with the uplift rising to 27% for campaigns still dominated by exact- and phrase-match keywords. Google also says that campaigns using the full AI Max suite see, on average, 7% more conversions or conversion value at a similar CPA or ROAS than campaigns using search term matching alone. The system draws on keywords, ads, landing pages, URLs, and website content to find additional queries, generate customized text assets, and send users to the most relevant page on a site. In other words, the keyword is no longer the whole map; it is one signal inside a much larger predictive apparatus. (blog.google)

Still, it would be intellectually sloppy to declare keywords “dead.” Google’s own documentation says identical exact-match keywords still receive priority over other broad or AI-mediated matches in some auction situations. So the real ending is not the disappearance of keywords, but the collapse of keyword sovereignty. Precision is being relocated into brand controls, locations of interest, URL rules, exclusions, and better reporting. That shift also aligns with Google’s AI Overviews, where ads can appear above, below, or within the overview, and where Google explicitly recommends AI-powered targeting because these complex, answer-seeking queries are less likely to be covered by rigid keyword lists. Search marketing, then, is being redesigned from lexical matching into intent interpretation. The new competitive advantage will belong less to the advertiser who hoards keywords, and more to the one who trains, constrains, and audits the machine well. (support.google.com)

by EigoBoxAI
作成:2026/04/16 21:03
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