AI Max Can Expand Your Google Ads Reach. It Can Also Expand Your Waste

More Reach Is Not the Same as More Business

Google AI Max gives Search campaigns more freedom to move beyond the keywords advertisers choose.

It can identify additional searches, generate new ad copy and select a landing page it believes is more relevant to the user.

That can help businesses capture demand their keyword lists missed.

It can also give Google more ways to spend their budget.

The difference depends on what AI Max is working with:

• Clear or confused website messaging
• Strong or weak landing pages
• Qualified or misleading conversion signals
• Useful or unrestricted campaign controls

Google reports that non-retail advertisers activating AI Max typically see 14% more conversions or conversion value at a similar CPA or ROAS. That figure comes from Google’s aggregated internal data. It is not a guaranteed result for every campaign.

AI Max can expand performance.

But when the inputs are weak, it can expand waste just as efficiently.

Google Is No Longer Waiting for You to Choose the Right Keywords

Traditional Search campaigns begin with the advertiser deciding which keywords matter.

A digital marketing agency may target:

• Digital marketing agency in Mumbai
• Google Ads management company
• Performance marketing agency
• PPC services in India

But customers do not always search using neat, predictable phrases.

Someone may search:

“agency that can reduce wasted ad spend and improve lead quality”

That query may be highly relevant even if it does not closely match an existing keyword.

AI Max allows Google to expand beyond the campaign’s keywords using broad-match and keywordless technologies. It considers existing keywords, ads, creative assets and website URLs when identifying additional searches that may be relevant.

AI Max is not a separate campaign type. It is a set of targeting and creative enhancements added to a Search campaign.

The keyword list still matters.

It is simply no longer the only thing defining your reach.

What Are You Handing Over to AI Max?

AI Max mainly expands three parts of a Search campaign.

1. Search term matching

Google can enter your ads into auctions for relevant searches beyond the keywords already inside the account.

This may uncover longer, more conversational and less predictable queries.

It may also expose the campaign to searches you would never have selected yourself.

2. Text customisation

Google can create additional headlines and descriptions using your domain, landing pages, existing ads and ad-group keywords.

These assets can appear alongside the copy supplied by the advertiser. Google also gives advertisers reporting to review the text it has generated.

3. Final URL expansion

Google can replace your selected landing page with another relevant page from the same domain when it believes that page better matches the search.

For example, a broad digital marketing campaign may normally direct visitors to a general service page. Someone searching specifically for generative engine optimisation may instead be sent to a dedicated GEO page.

Final URL expansion is turned on by default when an advertiser opts into AI Max, although it can be switched off. Advertisers can also exclude pages they do not want Google to use. Google says the selected page must be relevant to the query and connected to the ad group’s theme.

When Google chooses another URL, pinned responsive-search-ad assets may not be used because they may not match the new page or the user’s intent.

In one search, Google may therefore help decide:

• The opportunity
• The message
• The destination

That is a significant amount of control to hand over without first checking the quality of the system behind it.

More Reach for You Also Means More Ad Inventory for Google

Google says AI Max is helping open billions of previously unmonetised searches to advertising as queries become longer and more conversational.

That deserves attention.

It also needs context.

A search becomes monetisable for Google when an ad can be shown against it.

It becomes valuable to the advertiser only when it produces a meaningful business result.

Those are not the same thing.

More reach can produce:

• New customers
• Useful long-tail searches
• Better coverage of complex intent
• Higher conversion value

It can also produce:

• Irrelevant clicks
• Low-intent visitors
• Poor-quality enquiries
• More spend without more revenue

Incremental traffic is not automatically incremental growth.

The question is not whether AI Max can find more searches.

It can.

The question is whether those searches create enough commercial value to justify the additional spend.

AI Max Can Find Demand. It Cannot Make Buyers Prefer You

Even a perfectly managed AI Max campaign has a limit.

It can find people who are searching.

It cannot guarantee that your business was considered before that search happened.

A buyer may already have formed a shortlist through:

• An earlier Google search
• An AI-generated answer
• Reviews
• Social media
• Industry recommendations
• A peer mentioning a brand

Paid search can still influence the final choice. But it often enters after consideration has already begun.

That means there are two different problems to diagnose.

The first is an account problem. Poor targeting signals, unsuitable landing pages or weak conversion data are wasting budget.

The second is a preference problem. Your brand was not visible or credible when the buyer began deciding whom to consider.

Cleaning your AI Max setup can reduce avoidable waste.

It cannot place your brand on a shortlist that formed without you. That is why AI Max can increase your cost per lead even when total conversions rise.

Your Website Is Now Part of Your Ad Targeting

A website has always influenced what happens after an ad click.

AI Max increases its influence before the click.

Google can use your website and landing-page content to understand:

• What your business offers
• Who each service is for
• Which searches are relevant
• Which page should receive the visitor
• What message may work in the ad

Text customisation uses information from the domain, landing pages, existing ads and keywords. Final URL expansion can then choose another relevant page from the website.

This creates a problem for businesses with unclear websites.

If several service pages repeat the same generic promises, Google has to interpret that ambiguity.

It may:

• Match the wrong service with the wrong search
• Generate weak or inaccurate copy
• Choose a page that explains but does not convert
• Attract people looking for something you do not offer

Your website is no longer only where the click lands.

It is helping Google decide which clicks to buy.

Google Will Optimise for Whatever You Call a Conversion

This may be the biggest AI Max risk.

Google Ads does not automatically know which enquiry your sales team considers valuable.

It understands the conversion actions you give it.

Suppose an account treats all of these as primary conversions:

• Contact-form submissions
• WhatsApp clicks
• Calls longer than 30 seconds
• Appointment requests
• Brochure downloads

The campaign may report strong conversion growth.

But those actions could include:

• Job seekers
• Students
• Spam enquiries
• Existing customers
• Prospects outside the target location
• People with unsuitable budgets

If Google is told that all these actions represent success, it may optimise toward finding more people likely to complete them.

That does not mean the technology failed.

It means the campaign was trained using the wrong definition of success.

Google allows advertisers to send qualified-lead and converted-lead outcomes from a CRM or internal sales system back into Google Ads. These deeper events give the platform more information about which enquiries progressed after the initial interaction.

The better signal is not:

Someone completed a form.

It is:

Someone completed a form, matched our target profile and became a real sales opportunity.

Enhanced conversions for leads can also connect later offline outcomes back to the original ad interaction using first-party information collected from the website.

Less Targeting Control Requires Tighter Input Control

AI Max does not remove the need for campaign management.

It changes where that management happens.

Advertisers may spend less time trying to predict every possible search phrase.

They must spend more time controlling:

• Conversion goals
• Lead-quality feedback
• Negative keywords
• Brand and location settings
• Eligible landing pages
• URL exclusions
• Generated ad copy
• Website messaging
• Budget and bidding targets

You give Google more room to find demand.

In return, you must give it clearer information and stronger limits.

Weak manual targeting may waste money slowly.

Weak automation can waste it at scale.

When AI Max Expands Performance and When It Expands Waste

AI Max has a stronger chance of improving performance when:

• Conversion tracking is reliable
• Services or products are clearly separated
• Landing pages match commercial intent
• Qualified leads are reported back to Google
• Negative keywords and URL controls are maintained
• The account has enough meaningful conversion data
• The campaign has sufficient budget for a proper test

The risk rises when:

• Every form fill is treated as equally valuable
• Several services are mixed together
• Outdated pages remain eligible for paid traffic
• Nobody reviews AI-generated messaging
• Sales does not share lead quality with marketing
• The campaign is already spending inefficiently
• More platform conversions are mistaken for more business

AI Max cannot repair a weak measurement system.

It can only optimise using the signals it receives.

Do Not Test AI Max Using Clicks and Form Fills

A test can show:

• More impressions
• More clicks
• More platform conversions
• A stable cost per conversion

And still produce worse business results.

A meaningful AI Max test should examine:

• Search-term relevance
• Landing pages selected
• Generated ad copy
• Cost per qualified lead
• Lead-to-opportunity rate
• Customer acquisition cost
• Pipeline value
• Revenue
• Return on ad spend

Google’s AI Max reporting lets advertisers review search terms, customised text and selected landing pages. That information can then be used to tighten keywords, assets and URL controls.

AI Max can win inside the Google Ads dashboard while losing inside the sales pipeline.

How to Test AI Max Without Giving Google a Blank Cheque

1. Clean the conversion setup

Remove accidental clicks and low-value interactions from primary optimisation unless they genuinely represent business value.

2. Define a qualified lead

Marketing and sales should agree on what makes an enquiry worth pursuing.

This may include:

• Location
• Budget
• Business type
• Service requirement
• Decision-making authority
• Purchase timeline

3. Send deeper outcomes back to Google

Use qualified leads, converted leads and meaningful conversion values instead of relying only on form submissions.

4. Audit every eligible page

Exclude pages that should not receive paid traffic, including:

• Recruitment pages
• Outdated blogs
• Thin service pages
• Old campaign URLs
• Pages without a clear conversion path

5. Review the controls

Check negative keywords, brand settings, locations, eligible URLs, generated assets and bidding targets before the test begins.

6. Run an AI Max experiment

Google provides a one-click AI Max experiment that splits an existing Search campaign 50/50 between the original setup and the AI Max test. This avoids creating a separate duplicate campaign.

7. Compare business outcomes

Do not scale the trial because it produced more conversions.

Scale it when it produces better qualified leads, stronger sales opportunities or more revenue at an acceptable cost.

How Verve Media Helps Keep AI Max From Turning Reach Into Overspend

Verve Media starts by checking what Google is being told to optimise for.

We review the conversion setup, lead-quality definitions and downstream sales outcomes before judging campaign performance. A form fill, a qualified lead and a closed customer should not all carry the same meaning.

We then control the expansion. That means reviewing the searches AI Max enters, the copy it generates and the pages it selects, while tightening negative keywords, URL exclusions, location settings and landing-page relevance.

Finally, we test AI Max against the existing campaign and measure what reaches the sales pipeline. The decision is based on qualified-lead cost, opportunity value and revenue, not simply the number of conversions reported by Google.

The goal is not to prevent AI Max from exploring.

It is to ensure that its exploration has clear boundaries and a commercially useful definition of success.

More automation should produce better decisions, not simply faster spending.

Give Google More Freedom Only After You Fix the Signals

AI Max may help businesses reach valuable searches that conventional keyword strategies miss.

But giving Google more freedom before fixing the website, landing pages and conversion signals does not remove waste.

It automates it.

Before activating AI Max, make sure Google can clearly understand:

• What you sell
• Who you want to reach
• Which pages should receive traffic
• Which outcomes actually matter

AI Max should not be judged by how far it expands your campaign.

It should be judged by whether that expanded reach produces better customers and stronger business results.

Only then does expanded reach become expanded growth.

Sources: 

1. About AI Max for Search Campaigns
   https://support.google.com/google-ads/answer/15910366
2. How AI Max for Search Campaigns Works
   https://support.google.com/google-ads/answer/15910187
3. About Text Customisation in Search Campaigns
   https://support.google.com/google-ads/answer/11259373
4. About Final URL Expansion in Search
   https://support.google.com/google-ads/answer/16230205
5. AI Max Reporting for Search Campaigns
   https://support.google.com/google-ads/answer/16470459
6. Run an AI Max Experiment
   https://support.google.com/google-ads/answer/16450159
7. About Qualified Leads and Converted Leads
   https://support.google.com/google-ads/answer/11459091
8. Enhanced Conversions for Leads
   https://support.google.com/google-ads/answer/15713840
9. Google Is Upgrading Dynamic Search Ads to AI Max
   https://blog.google/products/ads-commerce/dsa-upgrade-to-ai-max-2026/
10. Google Says AI Max Unlocks Billions of New Monetisable Searches
    https://searchengineland.com/google-ai-max-billions-new-monetizable-searches-483347

Written by Dilshad, Content Lead at Verve Media

Dilshad builds content strategies that are not just written for algorithms, but for how people actually search, compare, trust and choose brands online.