Google has started automatically upgrading two legacy Search campaign types to AI Max, its AI-driven campaign structure, beginning September 1, 2026. If your business runs Google Ads, this change may already be affecting your account, whether you opted in or not.
What Google Changed on September 1
Google is automatically migrating campaign-level Broad Match keywords and legacy Automatically Created Assets (ACA) campaigns into AI Max for Search. According to Google, campaigns are being migrated in place using equivalent AI Max settings to minimize disruption, and existing brand inclusions and exclusions are carrying over automatically. As of August 3, 2026, advertisers can no longer create new campaigns using the old legacy structure, meaning AI Max is now effectively the default for Search campaigns going forward.
AI Max expands on traditional Search campaigns by using AI to broaden keyword matching, generate and test ad assets automatically, and adjust targeting in real time based on a page’s full content rather than a fixed keyword list. For advertisers, that means less manual control over exact match variations and more reliance on Google’s automated systems to decide who sees an ad and when.
Why This Matters for Small and Local Businesses
Digital marketing trends 2026 keep pointing in the same direction: platforms are shifting budget decisions and targeting logic toward automation, and Google Ads AI Max is the clearest example yet for search advertising. For a local service business or small retailer, this migration can change cost per click, which search terms trigger an ad, and how much manual tuning is even possible inside a campaign.
The upside is real. AI Max campaigns are built to surface ads for a wider range of relevant searches, including long-tail and conversational queries, which can catch customers your old exact-match keyword list would have missed entirely. The tradeoff is visibility. Search term reporting inside AI Max is less granular than in legacy campaigns, so it becomes harder to see exactly which query triggered which ad.
What to Check in Your Account Before and After Migration
Before this migration finishes rolling out across all remaining accounts, it’s worth logging into Google Ads and reviewing a few specific things: current brand inclusion and exclusion lists, negative keyword lists (which can behave differently under AI Max), budget pacing on campaigns that were recently migrated, and whether Final URL Expansion is set the way you want it. After migration, watch cost per click and conversion rate for the first one to two weeks, since automated systems typically need a learning period to stabilize.
This rollout is happening at the same time Microsoft Ads is pushing its own automation forward, having rolled out its version of AI Max in general release and turned it on by default for new Search campaigns. Between the two, most paid search advertisers are now operating inside AI-managed bidding and targeting whether they actively chose to or not.
A Practical Next Step
Rather than fighting the shift, the more useful move for most small businesses is to treat this as a prompt to refresh ad copy, landing pages, and audience signals, since AI Max campaigns lean heavily on the quality of the assets and first-party data you feed them. Clean, specific ad copy and a well-built landing page do more inside an AI-managed campaign than they used to, not less.
Frequently Asked Questions
What is Google Ads AI Max?
AI Max is Google’s AI-driven Search campaign structure that automatically broadens keyword matching, generates ad assets, and adjusts targeting using a page’s full content rather than a fixed keyword list.
Do I need to do anything for the September 1 migration?
Google is migrating eligible campaigns automatically and carrying over existing brand settings, but advertisers should still review negative keywords, budgets, and URL expansion settings before and after the change.
Can I opt out of AI Max?
As of August 3, 2026, new legacy campaign structures can no longer be created, and Google has not published an opt-out path for campaigns already scheduled for migration.
Will this change my cost per click?
It can. AI Max campaigns bid across a broader set of queries, so cost per click and impression volume commonly shift during the first one to two weeks after migration while the system calibrates.