Google AI Max for Search Campaigns: Setup and Migration Checklist
A practical guide to AI Max search-term matching, text customization, Final URL expansion, controls, reporting, experiments, and the DSA migration timeline.
Google AI Max is not a new campaign type. It is an optimization layer for existing Search campaigns.
It combines:
The opportunity is incremental reach and relevance. The risk is allowing Google to match queries, generate messages, or select pages that do not fit the business.
This guide shows how to test it with control.
What AI Max changes
Search-term matching
AI Max can use broad match, keywordless technology, your ads, and landing pages to find relevant searches beyond the account’s explicit keywords.
At ad-group level, you can turn search-term matching off.
Text customization
Google may create tailored ad copy from existing ads, landing-page content, and assets.
Final URL expansion
Google may choose another relevant page on your domain instead of the final URL you supplied.
Google states that Final URL expansion requires text customization. It also warns that pinned responsive-search-ad assets may not be respected when a different URL is selected.
Read the current feature mapping in Google’s AI Max documentation.
AI Max versus Performance Max
| AI Max for Search | Performance Max |
|---|---|
| Optimization layer for Search campaigns | Separate campaign type |
| Primarily Search inventory | Multiple Google channels |
| Keeps familiar Search structure | Uses asset groups and cross-channel automation |
| Includes Search-specific matching and reporting | Optimizes across broader inventory |
Choose based on the customer journey and measurement—not because both names contain “Max.”
Before enabling AI Max
1. Confirm the conversion goal
Do not expand traffic while optimizing toward a weak signal.
For lead generation, distinguish:
For ecommerce, pass revenue and, where feasible, account for margin or customer value.
2. Audit every indexable landing page
Final URL expansion can expose weaknesses across the site.
Identify pages that should never receive paid traffic:
Prepare URL exclusions before launch.
3. Review website claims
Text customization uses website and account inputs. Remove:
4. Test tracking templates
Google warns that dynamic landing pages can break when tracking templates do not use the {lpurl} parameter correctly.
Click-test several eligible pages with:
Do not discover a 404 after the campaign has spent money.
5. Establish a baseline
Save at least the last 30–60 days of:
Without a baseline, “AI Max improved performance” becomes impossible to verify.
The 12-step setup checklist
1. Open an eligible Search campaign.
2. Confirm the correct campaign conversion goals.
3. Verify budget is sufficient for the test.
4. Enable AI Max through campaign settings or an experiment.
5. Decide whether each ad group should use search-term matching.
6. Review brand inclusions and exclusions.
7. Configure locations of interest where geographically relevant.
8. Turn text customization on only after reviewing site claims.
9. Enable Final URL expansion only after the URL audit.
10. Add URL exclusions for non-commercial or ineligible pages.
11. Validate tracking parameters on dynamic destinations.
12. Record the launch date and freeze unrelated major changes.
The safest way to test
Use a one-click experiment where available.
Define before launch:
Example:
| Item | Definition |
|---|---|
| Primary success | 10% lower qualified CPA |
| Guardrail | Wrong-service leads remain below 10% |
| Duration | Four weeks minimum |
| Sample | At least 30 qualified outcomes per arm |
| Decision | Adopt only if economics improve without material quality loss |
Do not use those exact thresholds blindly. Set them from your economics and normal volatility.
What to review after launch
Google’s AI Max reporting includes new ways to inspect:
Google currently recommends allowing a learning period before making rapid changes. Review its AI Max reporting guidance for the latest interface and timing recommendations.
Weekly review
Classify search terms:
Then review selected URLs:
Controls that matter most
Brand controls
Use inclusions when a campaign should associate only with specified brands. Use exclusions to prevent unwanted brand association.
Keep brand and non-brand reporting commercially separate even when automation expands matching.
Location-of-interest controls
For travel, property, local services, and destination searches, a user’s physical location and geographic intent can differ. Configure this deliberately.
URL exclusions
Exclude pages because they are operationally inappropriate, not because one page had an expensive click.
Negative keywords
Add negatives for clear mismatches. Avoid blocking valuable new queries simply because they do not resemble the original keyword list.
Seven AI Max mistakes
1. Enabling it in a campaign already limited by an unrealistic budget.
2. Optimizing toward raw leads while complaining about lead quality.
3. Allowing the whole site into Final URL expansion.
4. Ignoring pinned-message implications.
5. Leaving old claims and offers on the website.
6. Judging the test after three days.
7. Measuring platform conversions instead of qualified or profitable outcomes.
DSA and legacy-setting migration timeline
Google announced that legacy features are moving into AI Max.
Its June 2026 update says:
Timelines can change. Verify the latest dates in Google’s official DSA-to-AI-Max announcement.
DSA migration checklist
Do not wait for an automatic migration to learn where the controls live.
Who should test AI Max first?
Good candidates:
Fix the foundation first when:
AI Max increases the system’s freedom. Better inputs and stronger governance make that freedom useful.
Want a controlled AI Max test plan tied to qualified outcomes? See my Google Ads management service or request a Revenue Leak Audit.
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Written by
Vince Servidad
PPC Strategist · Google Ads, Meta Ads & conversion systems
Filipino PPC strategist. A seven-figure Shopify brand and 10+ years across Google Ads, Meta Ads, stores, tracking, and content.
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