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Performance Max vs Search Campaigns: Which One Should Your Business Run?
By Jason Stern · · Founder, Enlightened Media (Google Premier Partner)
Search campaigns show text ads on Google search results for keywords you choose, with full control over keywords, match types and ad copy. Performance Max is one automated campaign that runs across all of Google's inventory. For most local service businesses chasing leads, Search should be the foundation. For ecommerce with a clean product feed, PMax usually earns its place.
What Performance Max actually is
Performance Max (PMax) is a single campaign that can serve ads on Search, Shopping, YouTube, Display, Discover, Gmail and Maps. You don't pick keywords or placements. You give Google the raw materials and a conversion goal, and its bidding system decides where, when and to whom each ad shows.
Those raw materials are:
- Asset groups: headlines, descriptions, images, logos and videos that Google mixes into ads for each surface. For retailers, a Merchant Center product feed is attached too.
- Audience signals: your customer lists, website visitors and custom segments. These are hints to speed up learning, not targeting limits. Google can and does show ads well outside them.
- Search themes: words and phrases that tell PMax what kinds of searches are relevant. They work like loose keyword suggestions, not like keywords in a Search campaign.
The pitch is simple: let Google's automation find conversions anywhere. The catch is that PMax optimizes toward whatever you tell it counts as a conversion, on whichever surface delivers it cheapest.
What Search campaigns give you that PMax doesn't
A Search campaign only shows ads on Google search results (and optionally search partners), triggered by keywords you choose. That sounds limited, but for a lead gen business it's the point. Someone typing "emergency plumber near me" has a problem today.
- Keyword and match type control. You decide which queries you want, using exact, phrase or broad match, and you can bid differently on each.
- Full search terms visibility. The search terms report shows the actual queries that triggered your ads, so you can add negatives and spot new opportunities.
- Ad copy control. You write responsive search ads for each ad group and can pin headlines when a message has to appear, such as a license number or a service area.
- Clean reporting. Every click came from a search, so cost per lead means one thing.
If you want more on how query intent drives local results, I wrote about near me keywords separately.
The control and transparency tradeoff
When PMax launched, it was close to a black box. That has changed a lot, and it's worth being accurate about where things stand, because Google keeps adding features:
- Search terms. PMax now shows search term insights and, more recently, a search terms report, so you can see far more of what you're paying for than you could at launch.
- Channel reporting. Google added channel-level performance reporting that breaks results out by surface (Search, YouTube, Display and so on). Before that, you were guessing where your money went.
- Negative keywords. Campaign-level negative keywords are now supported in PMax. Previously you had to request account-level negatives or go through Google support.
- Brand exclusions. You can exclude your own brand (and others) from PMax's search inventory so it doesn't take credit for people who were already looking for you.
Even with those improvements, you still can't set bids by query, you can't choose which surfaces get budget, and you can't fully control which asset combinations show. Search still gives you meaningfully more control. Check your own account interface for what's available, since rollouts are staggered.
Why PMax fits ecommerce and Search fits local lead gen
PMax works best when three things are true: there's a product feed, the conversion is a purchase with a real dollar value, and there's enough volume for the algorithm to learn. That describes most ecommerce stores. Google sees the revenue on each sale, so it can bid toward actual return on ad spend, and Shopping inventory (which PMax absorbs) is where a lot of product buying starts.
A local HVAC company, law firm or dental office is in a different spot. The conversion is a phone call or form fill, the value of each lead varies wildly, and volume is often 20 to 100 leads a month, not thousands of purchases. With that little data, PMax has a harder time telling a real customer from a junk inquiry. In the accounts I manage, Search is the core for local service clients, and PMax is something we test once tracking is solid, not something we start with. Many of those businesses also get good results from Local Services Ads alongside Search.
The two risks: cheap junk leads and branded traffic
Cheap Display and YouTube leads
If your conversion is "form submitted," PMax will find the cheapest form submissions it can. Those often come from Display and YouTube placements, including mobile apps, where accidental clicks and spam fills are common. The dashboard shows a great cost per lead. Your phone doesn't ring with real customers. This is the most common PMax problem I see in lead gen accounts we take over.
Branded traffic
PMax can also bid on searches for your own business name. Those people were going to find you anyway, so PMax looks efficient while doing very little. Use brand exclusions, and run brand terms in a separate Search campaign if you want to protect them from competitors.
Running PMax and Search together
You don't have to choose one. Many accounts run both. When they overlap, Google's stated rule is that if a search query is identical to an exact match keyword in an eligible Search campaign, the Search campaign gets priority. For other queries, Google generally picks based on Ad Rank, so PMax can win traffic you might have expected Search to get.
In practice, that means:
- Put your highest-value queries in Search as exact match so you keep control of them.
- Use PMax campaign negatives and brand exclusions to keep it off traffic Search already covers well.
- Compare total leads and cost per lead across the whole account, not each campaign alone, because PMax and Search can trade credit back and forth.
The deciding factor: conversion tracking quality
Whether PMax helps or hurts comes down to what you're feeding it. Automated bidding chases the signal you give it. Bad signal, bad results, faster.
Before turning on PMax for a lead gen business, I want to see conversion tracking that counts qualified calls (with a minimum duration), deduplicated form fills, and ideally offline conversion imports from a CRM so Google learns which leads actually became jobs. Assigning conversion values helps too. A simple way to set a target: max CPA = average job value x close rate x acceptable margin. A $4,000 job with a 25% close rate and a 20% acquisition budget gives $200 per lead.
Here's the framework I use:
- Ecommerce with a healthy feed and purchase tracking: PMax is a reasonable core campaign, with brand exclusions on and Search for high-intent and brand terms.
- Local lead gen with basic tracking: Search only. Fix tracking first.
- Local lead gen with qualified call tracking and CRM imports: Search as the base, then test PMax with a capped budget and judge it on closed jobs, not form fills.
- Small budget (under roughly $2,000 a month): Search only. Splitting a small budget starves both campaigns of data. See how much to spend on Google Ads for more on budgeting.
Frequently Asked Questions
Is Performance Max better than Search campaigns?
Neither is better across the board. PMax tends to perform well for ecommerce businesses with a product feed and purchase tracking. Search tends to perform better for local service businesses generating calls and forms, because you control which queries trigger ads and can see exactly what you paid for. Many accounts run both.
Can you add negative keywords to Performance Max?
Yes. Google now supports campaign-level negative keywords in Performance Max, which used to require account-level lists or a request to Google support. You can also use brand exclusions to keep PMax off searches for your own business name. Feature limits change, so check your account for current options.
Will Performance Max cannibalize my Search campaigns?
It can. Google says a Search campaign gets priority when the query is identical to one of its exact match keywords. For other queries, Ad Rank decides, so PMax may take traffic Search used to get. Use exact match for key terms, add PMax negatives, and judge results at the account level.
Does Performance Max work for lead generation?
It can, but only with strong conversion tracking. If PMax is optimizing toward any form fill, it often finds cheap, low-quality leads from Display and YouTube. It works better when you track qualified calls and import offline conversions from your CRM, so the algorithm learns which leads actually turn into paying customers.
The Bottom Line
I personally manage every account at Enlightened Media, so when I review a client's PMax and Search setup, I'm looking at the search terms, channel reports and lead quality myself. If you're not sure whether PMax is helping or just reporting cheap conversions, request a free audit and I'll tell you what I'd keep, cut and test.
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