Google AI Max for Search: The DSA Replacement and Your Migration Action Plan

DSA Is Dead. Here's What's Replacing It.

Google is sunsetting Dynamic Search Ads, and the replacement — AI Max for Search — is not just a rebrand. It's a fundamentally different way of running Search campaigns, and if you're currently managing DSAs, you need to understand what's changing before the auto-migration hits your account.

Let me be direct: I've managed enough Google automation rollouts to know that waiting for the forced upgrade is a bad idea. Every time Google auto-migrates campaigns — whether it's Smart Shopping to Google Performance Max or expanded text ads to responsive — the advertisers who moved early kept more control and recovered performance faster.

This post covers what AI Max actually is, how it differs from DSA, what you're losing, and the specific steps to take before, during, and after migration.

What Is AI Max for Search?

AI Max for Search is an AI-powered optimization layer that sits on top of existing Search campaigns. That's the key difference from DSA, which was a standalone campaign type. AI Max isn't a new campaign — it's a setting you apply to a Search campaign that automates two things:

• Targeting: AI-driven search term matching that goes beyond your keyword list, similar to how DSA used your website content to find relevant queries.
• Creative: Asset optimization that generates and tests headline and description combinations dynamically, rather than relying on DSA's dynamic headlines pulled from landing pages.

Think of it this way: DSA was a separate bucket for “queries I didn't think of.” AI Max is a layer that says “let the AI expand both what queries you show up for and what ads you show, but within the campaign structure you already have.”

The DSA Sunset Timeline

Here are the dates Google has confirmed as of their April 2026 announcement:

• September 2026: New DSA campaigns can no longer be created. Features tied to DSA — auto-created assets (ACA) and campaign-level broad match — become unavailable for new campaigns. Existing DSA campaigns that are eligible will start being auto-migrated to AI Max.
• February 2027: Full DSA sunset. All remaining DSA campaigns are auto-upgraded to AI Max.

Note: These dates come from Google's official announcement. If you're reading this months later, double-check the current timeline — Google has been known to shift deadlines.

The migration tool is available now. You don't have to wait.

AI Max vs. DSA: What's Actually Different

This isn't a cosmetic change. The architecture is different, and that has real implications for how you manage campaigns.

Campaign Structure

DSA was a standalone campaign type. You created a DSA campaign, set auto-targets (categories, specific pages, or all pages), and it ran alongside your keyword-based Search campaigns. It had its own budget, its own ad group structure, and its own reporting.

AI Max is a layer applied to existing Search campaigns. There's no separate campaign type. You enable AI Max on a Search campaign, and it expands that campaign's targeting and creative beyond what your keywords and assets alone would achieve.

This is a meaningful shift. With DSA, you could isolate “AI-managed” spend in its own campaign with its own budget cap. With AI Max, the AI-expanded queries share budget with your manual keyword queries. That changes how you think about budget allocation and performance isolation.

Targeting

DSA used your website's indexed pages and auto-targets (category, specific webpage, or all pages) to match queries. You had some control over which pages DSA could use and which categories to target.

AI Max uses AI-driven search term matching. Google hasn't fully detailed how this works under the hood, but the intent is broader and more dynamic than DSA's page-based matching. Your landing pages still matter — AI Max pulls from them — but the matching logic is less transparent.

Creative

DSA generated dynamic headlines from your landing page titles and content. The headlines were often literal pulls of page titles or H1 tags, which is why so many DSA ads had clunky, SEO-optimized headlines that looked terrible as ad copy.

AI Max uses asset optimization — it generates and tests headline and description combinations from your provided assets. This is closer to how responsive search ads work, but with AI driving the combinations and potentially generating new variations.

You gain more creative flexibility than DSA's rigid dynamic headlines, but you lose the “set it and forget it” nature of DSA where you didn't need to write headlines at all.

What Happens to DSA Features During Migration

This is where things get murky, and I want to be transparent: Google hasn't published a detailed mapping of how every DSA feature converts to AI Max. Here's what we know and what's still unclear:

• Auto-targets (category, specific webpage, all pages): These don't have a direct equivalent in AI Max. Since AI Max uses AI-driven matching rather than page-based targeting, your auto-targets likely won't carry over as-is. You'll need to rely on the AI's matching plus your negative keyword lists to control query scope.
• Negative keywords: These should carry over, but verify after migration. Negative keywords are your primary control mechanism in AI Max — they matter more than ever.
• Ad customizers: Unclear how these map. If you're using DSA ad customizers heavily, test them thoroughly after migration.
• Landing page selection: DSA let you target specific pages. AI Max's landing page selection is AI-driven. If you relied on tight page-level targeting, you'll need to use negative keywords and campaign structure to approximate that control.

What Control You're Losing (And What You Still Have)

Let me be blunt about the tradeoff, because I've seen this pattern before with every Google automation push.

You're Losing

• Granular page-level targeting. DSA's “target specific pages” gave you surgical control over which pages the ads pointed to. AI Max's AI-driven landing page selection is less precise.
• Isolated budget for AI-expanded queries. Since AI Max runs within your Search campaigns, you can't separate “AI-found” spend from “manual keyword” spend in the same campaign.
• Transparency into matching logic. DSA's category and page targeting was understandable. AI Max's matching is a black box. You'll see the search terms in reports, but you won't know why the AI chose them.

You Still Have

• Negative keywords. This is your most important control. Build them out before migrating.
• Brand controls. Google has indicated that brand controls are available within AI Max. Use them if you need to protect or exclude brand terms.
• Budget control at the campaign level. You can still cap spend, but you can't isolate AI-expanded spend within a campaign.
• The ability to disable AI Max. Google's help documentation says you can disable or adjust AI Max settings. However, it's unclear whether this applies after auto-upgrade — don't count on being able to revert easily once the forced migration happens.

The AI Max and Performance Max Overlap Problem

Nobody is talking about this, and it needs to be addressed. If you're running both AI Max on Search campaigns and Google Performance Max, both systems can expand to the same queries. Google has mentioned that Ad Rank determines which campaign wins the auction, but that's cold comfort when you're effectively bidding against yourself.

This is the same problem that existed when PMax launched alongside Smart Shopping — budget cannibalization between automated systems with no way to set priority rules.

My recommendation: if you're running PMax with Search campaign objectives, be deliberate about which campaigns get AI Max enabled. Don't layer it on every Search campaign if your PMax is already capturing long-tail and expanded queries. You'll end up paying for the same conversion twice.

The Migration Action Plan

This is what I'd do if I were managing this transition for my own accounts. I've been through enough forced Google migrations to know that preparation beats reaction every time.

Before Migration: Account Audit (Do This Now)

1. Document your current DSA structure. Export your auto-targets, negative keywords, landing page rules, and ad customizer configurations. You'll need these as reference points after migration.
2. Identify your DSA's role. Is your DSA primarily a coverage tool (catching queries your keywords miss), a landing page testing tool, or a budget overflow for high-volume terms? The answer determines how you restructure.
3. Clean up your negative keyword lists. Negative keywords are your primary control lever in AI Max. Review your search term reports from the last 90 days, identify consistently irrelevant queries, and add them as negatives before you migrate.
4. Audit your landing pages. AI Max pulls from your landing pages for both targeting and creative. If your pages have outdated titles, thin content, or confusing H1 tags, the AI will make bad decisions. Fix the pages first.
5. Review your PMax overlap. If you're running PMax, map out which queries PMax is already capturing. Don't enable AI Max on campaigns that would compete with PMax for the same terms.
6. Set a budget buffer. AI Max will likely expand your query coverage, which means more impressions and potentially more spend. If your campaigns are budget-limited, the AI will have to make tradeoffs. Google has flagged that budget-limited campaigns may not perform as well under AI Max — either increase budgets or narrow scope with negatives.

During Migration: Step-by-Step

1. Use the migration tool rather than waiting for auto-upgrade. The migration tool lets you choose which campaigns get AI Max and how settings are configured. Auto-upgrade will make those choices for you.
2. Migrate one campaign at a time. Don't flip the switch on all DSA campaigns simultaneously. Start with your lowest-risk DSA (smallest spend, least critical coverage) and monitor for 7 days before migrating the next.
3. Rebuild your negative keyword lists in the new structure. Verify that negatives carried over correctly. This is non-negotiable — don't assume the migration tool preserved them.
4. Configure brand controls. If your DSA had brand exclusions or inclusions, set these up in AI Max before the campaign goes live.
5. Add comprehensive asset sets. AI Max's creative optimization needs assets to work with. Provide multiple headlines and descriptions that cover your key value propositions, not just your brand name. The more quality assets you give it, the less likely the AI is to generate awkward combinations.

After Migration: The First 7 Days

The first week after migration is critical. Here's what to monitor:

• Search term report daily. Look for query drift — terms the AI is matching that your DSA wouldn't have caught. Some will be good expansions, others will be waste. Add negatives immediately for the waste.
• Cost per conversion vs. your DSA baseline. Expect some volatility. If cost per conversion is more than 30% above your DSA average after 7 days, something is wrong — check your negatives, asset quality, and budget constraints.
• Landing page match quality. Are AI Max's selected landing pages relevant to the queries it's matching? If you're seeing mismatches, you may need to restructure your site or add more negatives to block irrelevant query-page combinations.
• PMax overlap. Check if your PMax campaigns are competing with AI Max for the same queries. Look at auction insights and search term overlap between the two.
• Budget pacing. AI Max can increase impression volume significantly. If your campaign is hitting daily budget caps early, the AI is throttling itself — and that hurts performance. Either increase the budget or narrow scope.

Should You Migrate Early or Wait?

I've seen this question debated, and my answer is: migrate early, but strategically.

Here's why. When Google auto-migrates campaigns, it applies default settings that may not match your account's needs. The migration tool gives you control over how the transition happens. Waiting means giving up that control.

That said, “early” doesn't mean “today.” It means:

• Start your account audit now.
• Clean up negatives, landing pages, and asset sets over the next 2-4 weeks.
• Migrate your first low-risk campaign once your prep is done.
• Plan to have all campaigns migrated at least 30 days before the auto-upgrade deadline for your account type.

Don't wait until the last month. The advertisers who scrambled during the Smart Shopping to PMax migration lost weeks of performance while they figured out what the auto-upgrade had done to their accounts.

Budget-Limited Campaigns: A Specific Warning

Google has flagged that budget-limited campaigns may not perform as well under AI Max. This makes sense: if the AI expands your query coverage but your budget can't support the additional impressions, the system has to make real-time decisions about which auctions to enter. That's a recipe for inconsistent performance.

If your DSA campaigns are currently budget-limited:

1. Increase budgets before migrating if you have the headroom. Give AI Max room to work.
2. If you can't increase budgets, tighten your negative keyword lists and consider narrowing your campaign scope. A smaller, well-funded AI Max campaign will outperform a broad, budget-starved one.
3. Monitor impression share closely in the first 7 days. If you're losing impression share to budget, the AI is being constrained — and constrained AI makes worse decisions than unconstrained AI.

What I'd Do Differently If I Were Starting Fresh

If I were building a new account from scratch today — no legacy DSA to migrate — I'd structure it this way:

1. Brand campaigns: Standard Search with manual keywords, no AI Max. I want full control over brand terms.
2. Core non-brand campaigns: Standard Search with broad match + tROAS/tCPA bidding. Consider AI Max on these if I want expanded coverage, but only after the keyword campaigns are stable.
3. Coverage/long-tail: Either AI Max on a dedicated Search campaign with tight negatives, or PMax with Search objectives. Not both — pick one to avoid overlap.

The key principle: don't layer AI Max on top of campaigns that are already working well with manual keywords. Use it where you need expansion, not where you need precision.

And don't forget the top of the funnel. Search and PMax capture demand — they don't create it. That's the job of Google Demand Gen, which replaced standalone Display campaigns in 2026 and runs your awareness creative across YouTube, Discover, Gmail, and Maps. The full Google stack: Demand Gen creates awareness, AI Max captures the resulting search demand, PMax converts it.

The Bottom Line

AI Max for Search is Google's next step toward fully automated Search advertising. It's not optional — DSA is going away whether you like it or not. The question is whether you control the transition or let Google do it for you.

My take, having managed automated bidding and campaign types at scale: the advertisers who prepare, migrate on their own timeline, and maintain tight negative keyword lists will come out ahead. The ones who wait for auto-upgrade will spend months cleaning up messes they didn't make.

Start your audit today. Migrate strategically. Monitor aggressively for the first week after each migration. And don't let AI Max and PMax fight over the same queries without oversight.

If you want a structured walkthrough, download the AI Max Migration Checklist — it covers the account audit, settings configuration, and first-7-days monitoring plan step by step.

Frequently Asked Questions

• What is AI Max for Search and how is it different from DSA?

  AI Max for Search is an AI-powered optimization layer you apply to existing Search campaigns - it automates both targeting (expanding beyond your keyword list) and creative (generating and testing asset combinations). DSA was a standalone campaign type that used your website's pages to match queries and generated dynamic headlines from page content. The key structural difference: AI Max shares budget with your manual keywords within the same campaign, while DSA had its own isolated budget.

• When will DSA campaigns be automatically upgraded to AI Max?

  Google's current timeline: September 2026 for DSA campaigns with auto-created assets or campaign-level broad match enabled, and February 2027 for all remaining DSA campaigns. These dates come from Google's April 2026 announcement and may shift - verify the current timeline before planning. The migration tool is available now, so you don't need to wait for auto-upgrade.

• Should I migrate my DSA campaigns to AI Max now or wait?

  Migrate early but strategically. The migration tool gives you control over settings and structure; auto-upgrade applies defaults that may not suit your account. Start your audit now, clean up negatives and landing pages over 2-4 weeks, then migrate your lowest-risk DSA campaign first. Plan to finish all migrations at least 30 days before the auto-upgrade deadline for your account type.

• What controls do I lose when moving from DSA to AI Max?

  You lose granular page-level targeting (DSA's 'target specific pages' feature), isolated budget for AI-expanded queries (AI Max shares budget with manual keywords in the same campaign), and transparency into the matching logic. You retain negative keywords (your most important control), brand controls, campaign-level budget caps, and the ability to disable AI Max - though it's unclear whether disabling works after auto-upgrade.

• How does AI Max interact with existing Performance Max campaigns?

  Both AI Max and PMax can expand to the same queries, and Ad Rank determines which campaign wins the auction. This creates a real risk of budget cannibalization - you're effectively bidding against yourself. Be deliberate about which Search campaigns get AI Max enabled, and avoid layering it on campaigns that overlap with PMax's query coverage.

• What happens to my DSA auto-targets and negative keywords after migration?

  Negative keywords should carry over, but verify this after migration - don't assume the migration tool preserved them perfectly. Auto-targets (category, specific webpage, all pages) don't have a direct equivalent in AI Max, since AI Max uses AI-driven matching rather than page-based targeting. You'll need to rely on negative keywords and campaign structure to approximate the control you had with auto-targets.

• What should I monitor in the first 7 days after migrating?

  Check search term reports daily for query drift - terms the AI is matching that your DSA wouldn't have caught. Track cost per conversion against your DSA baseline (expect some volatility; investigate if it's more than 30% above baseline after 7 days). Verify landing page match quality. Check for PMax overlap in auction insights. Monitor budget pacing - if you're hitting daily caps early, the AI is constrained and performance will suffer.

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