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GoogleのAI Maxが検索広告のルールを書き換える——すべてのマーケターが知っておくべきことはこれだ

Google's AI Max Is Rewriting the Rules of Search Advertising—Here's What Every Marketer Needs to Know

GoogleのAI Maxが検索広告の常識を塗り替えようとしている。DSAの統合、キーワードレス技術の拡大――広告運用者が今知るべき変化の全体像を解説する。
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Google’s AI Max is changing the logic of search advertising. When Google introduced AI Max for Search campaigns on May 6, 2025, it presented the tool as a one-click package that combines broader search-term matching, automatic text customization, and final URL expansion. Google says advertisers who turn it on typically see 14% more conversions or conversion value at a similar CPA or ROAS, and campaigns that had relied heavily on exact and phrase match keywords may see even larger gains. (blog.google)

The bigger shift came on April 15, 2026. Google announced that Dynamic Search Ads, automatically created assets, and some campaign-level broad match settings are being folded into AI Max. Starting in September 2026, eligible legacy Search campaigns will be automatically upgraded, and advertisers will no longer be able to create new Dynamic Search Ads campaigns through Google Ads, Editor, or the API. Google expects these upgrades to finish by the end of September 2026. (blog.google)

This means the “new rule” is no longer simple keyword control. AI Max uses broad match, asset-based targeting, and keywordless technology to find additional queries. It can also generate ad text from landing pages and send users to the page that seems most relevant to their intent. In other words, advertisers are moving from choosing every search term by hand to guiding the system with stronger signals and clearer limits. That is an inference, but it is strongly supported by Google’s description of how AI Max works. (support.google.com)

Those limits matter. Google says negative keywords are still respected, and advertisers can use brand controls, URL inclusions and exclusions, and location-based controls. At the same time, some old habits become less reliable: if final URL expansion is enabled, pinned responsive search ad assets may not be respected, and manual CPC limits the full benefits of AI Max because search-term matching depends on automated bidding. (support.google.com)

AI Max is also expanding beyond standard Search. Google said on April 30, 2026 that it is bringing AI Max to Shopping campaigns and travel-specific formats, while adding “AI Brief,” a new tool that lets advertisers give messaging, matching, and audience guidance in plain language. Earlier, Google also said eligible Search campaigns with broad match, including AI Max, could appear in ads inside AI Overviews and AI Mode. Search advertising is not disappearing, but it is becoming more conversational, more automated, and much more dependent on how well humans teach the AI. (blog.google)

by EigoBoxAI
作成:2026/05/02 09:03
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