Dynamic Search Ads Are Becoming AI Max: Your Migration Plan (2026)

Adil Ziani

Ecommerce Google Ads Consultant, ex-Google, Google Partner

What is actually happening

Google confirmed it on its own blog in 2026: Dynamic Search Ads are upgrading to AI Max. If you have run ecommerce accounts for a decade like I have, DSA was the reliable workhorse for catalog coverage. You pointed it at your website or a page feed, Google crawled your pages, and it filled the gaps your keyword campaigns missed.

AI Max keeps that idea and extends it. Instead of only crawling pages to generate headlines and pick landing pages, AI Max matches search terms beyond your keywords, customizes ad text per query with Gemini, and applies Final URL expansion. And unlike DSA, you steer all of it in natural language through AI Brief. The crawler became a system you can talk to.

What you lose, what you gain

Honest accounting first. You lose some of DSA's simplicity. DSA had a narrow job and rarely surprised you. You also lose the neat mental model of auto-targets: "target this category of pages" was easy to reason about. AI Max decisions are broader and need more active supervision, especially early.

What you gain is bigger. Per-query text customization beats DSA's often clunky auto-generated headlines. Matching goes beyond what your page content literally says, which captures conversational and long-tail searches DSA never saw. And AI Brief gives you a steering layer DSA never had: with DSA you could only exclude, with AI Max you can instruct. On the client accounts I have migrated so far, the search term quality after two or three brief iterations is better than the old DSA queries, not just more numerous.

Pre-migration checklist

Do this before touching the upgrade, not after:

• Conversion tracking accuracy. AI Max optimizes harder on your data than DSA did. Verify purchase values match your backend within a few percent, and fix deduplication issues first.
• URL exclusions. Rebuild your excluded page list: checkout, account, legal, blog categories that attract informational traffic, out-of-stock pages.
• Negative keyword lists. Port every DSA negative list, then review it. Terms that protected DSA are still your fence when matching gets broader.
• Brand exclusions. Keep brand traffic in its dedicated campaign. Set brand exclusions so AI Max cannot absorb your cheapest conversions and flatter its own results.
• Baseline snapshot. Export 90 days of DSA search terms, CPA and revenue per target. You will need this to judge the migration honestly.

Mapping DSA structure to the AI Max model

Your DSA page feeds do not disappear conceptually; they become inputs. The custom labels you used to group pages ("bestsellers", "sale", "new-in") translate into matching guidelines in AI Brief: describe those product groups and the searches they should capture in plain language. Auto-targets built on page titles or URL patterns become a mix of two things: matching guidelines for the intent, and URL rules for where traffic is allowed to land.

My rule of thumb: one tightly themed DSA campaign maps to one AI Max campaign with a focused brief. Do not merge five DSA campaigns into one giant AI Max campaign on day one. You lose the ability to see which part of the catalog the AI handles well.

The first 30 days: monitoring plan

Week 1: check search terms daily. You are looking for category drift, not judging CPA yet. Add negatives and tighten matching guidelines immediately. Week 2: verify landing pages. Pull the landing page report and confirm Final URL expansion respects your exclusions. Weeks 3 and 4: now judge performance against your DSA baseline on CPA, ROAS and conversion volume. Compare full weeks, not days, because learning phases are noisy. If terms are clean but performance lags after four weeks, adjust targets before concluding the upgrade failed.

Common mistakes I already see

Migrating with broken tracking, so the AI learns from bad data. Skipping the AI Brief entirely, which turns the upgrade into unsteered automation. Deleting negative lists because "the AI handles it". Merging everything into one campaign and losing all diagnostic ability. And panicking in week one: the learning phase punishes impatient advertisers who reset targets every three days.

DSA earned its place in ecommerce accounts for over a decade. AI Max is a genuine upgrade, but only for advertisers who migrate deliberately. Prepare the foundations, write the brief, watch the first month closely.