Google Search Campaigns: The Complete Guide [2026]

Search is the oldest format in Google Ads — and still the most reliable. Someone types a query, you show up right when they're looking for exactly that. No guessing intent like Display, no waiting for the algorithm to learn who your audience is like PMax.

Everything I build for a client starts here. Foundation, then measurement, then scaling — Search is that foundation. If Search doesn't work, nothing built on top of it (Shopping, PMax, remarketing) will work better. This guide is my complete approach to Search campaigns in 2026 — including the September move to AI Max that Google announced for campaigns using campaign-level broad match or automatically created assets.

What is a Search campaign today — and why it's still the foundation

Search has existed since the start of Google Ads and has outlived every platform shift — Quality Score, Smart Bidding, PMax. The reason is simple: as long as people type queries into Google, Search captures the moment closest to a buying decision.

The order I build every account in never changes: foundation, then measurement, then scaling. Search is the foundation. Before you think about Shopping, PMax, or remarketing, Search tells you two things nothing else does as cleanly — whether people are actually searching for what you sell, and whether your measurement even works.

A mistake I see often: a business jumps straight to PMax because it's "more modern" or "more automated," without a single Search campaign to show whether demand even exists. The result is nobody knows why the account isn't working — algorithm, product, or market. Search gives you that answer first, fast and cheap.

AI Max for Search — the full suite

AI Max isn't one feature — it's a bundle of layers that turn on together at the campaign level. Here's what you actually get when you enable it.

The September 2026 migration — what changed

This is the part that is easy to miss. Per Google's announcement, during the September 1–30, 2026 window Google was automatically upgrading certain campaigns to AI Max — without advertisers asking for it — and expected all upgrades for eligible campaigns to wrap up by the end of September. As of October 2026 that window has closed, so now is the time to check your campaigns.

If you were running either of the first two configurations, the campaign was scheduled to move to AI Max under that announcement, whether you asked for it or not, provided it met Google's eligibility criteria. Practical consequence: a campaign with campaign-level broad match gets search term matching, and a campaign with ACA gets search term matching and text customization. Final URL expansion stays off in auto-upgraded campaigns (per the Google Ads Developer Blog, August 12, 2026).

Match types in 2026

Match types still exist, but the lines between them are thinner than a few years ago — especially now that AI Max is part of the picture.

If you are still deciding which terms belong in the campaign at all, research comes before match types — the method and selection criteria are in the keyword research guide.

Where AI Max actually changes the game: with broad match, the line between "match type" and "search term matching" blurs. Both lean on signals, not literal text. Practical consequence — if you're already running wide-open broad match without close monitoring, adding AI Max on top increases reach, but also increases the need for disciplined review of what's actually showing.

Campaign structure — intent and margin

The most common mistake I see on new accounts: every keyword in one campaign, one budget, one goal. That works while the account is small. The moment you try to scale, you lose control over where the money actually goes.

This isn't a recommendation to run 20 campaigns for a small account. For a smaller budget, 3–4 segments are enough: brand, non-brand high intent, non-brand high margin, and maybe a research layer. As the account grows, segments split further.

Negative keywords — a system, not a list

Negative keywords often get treated as a one-time task — build a list at launch, forget it. That's a mistake, especially with broad match and AI Max search term matching widening reach further than you'd manually catch.

Treat it as a system: regular search term review, not a one-time list at launch.

For a detailed breakdown of negative list categories and account-level vs. campaign-level structure, see the negative keywords guide.

Writing ads (RSA)

Ads in Search campaigns are Responsive Search Ads — you provide multiple headlines and descriptions, Google tests the combinations. AI Max can generate additional variants based on the query, but you still write the backbone.

This is its own discipline with its own rules — how many headlines is optimal, how to avoid every headline saying the same thing in different words, how to use pinning without choking off testing. I haven't repeated it here because a full guide already exists: RSA guide — how to write ads that convert.

Better headlines are also the main lever for CTR in a Search campaign. I break down what moves it in a separate guide.

Bidding strategy

Search campaigns today almost always run some form of Smart Bidding — Maximize Conversions, Target CPA, or Target ROAS, depending on how much data you have and what you're optimizing for. Manual CPC is rarely the right call today, outside of specific low-conversion-volume situations.

Which bidding strategy to pick and how to set it up depends on the account's stage — how many conversions you're getting monthly, whether you're tracking order value or just conversion count, and how fast you're changing targets. Full breakdown: Smart Bidding guide.

Measure before you scale

I repeat this in every guide I write because it's the most common cause of accounts that fail: scaling before measurement is verified. A Search campaign that "looks good" in the Google Ads interface, with broken measurement underneath, pushes you toward the wrong decisions — you raise budget on a campaign that in reality isn't converting anywhere near what the report claims.

Before raising budget or switching to Target ROAS, check whether the conversions Google Ads reports actually match real sales or leads. The conversion tracking guide covers exactly that process — data-driven attribution, GA4/GTM setup, and how to verify the numbers match reality before you raise the stakes.

Frequently asked questions