Performance Max

Performance Max is a Google Ads campaign type that serves across Search, Shopping, YouTube, Display, Discover, Gmail and Maps from a single campaign. You supply the raw material, headlines, descriptions, images, video and a few signals about who you want. Google decides where each ad appears, what it looks like when it gets there, and who sees it.

In short

• One campaign covering every Google surface at once.
• You supply assets and signals, the system decides placement and audience.
• It will bid on your own business name unless you exclude it.
• Reporting is grouped, so precise diagnosis is limited by design.

What you hand over and what you keep

The trade is worth stating plainly, because it is the whole character of this campaign type.

You keep the assets, the destination, the conversion goals, the countries and languages, and a small number of exclusions. You hand over placement, bidding detail, audience selection and, most notably, keywords. There is no keyword list here. Search themes let you tell the system what you think people search for, and they are an input rather than an instruction.

That is a reasonable trade for a business that would otherwise never run video or shopping placements at all. It is a poor trade for an account that already knows its best searches and wants to defend them. In most accounts the two campaign types belong side by side. One replacing the other is where the trouble starts.

Words you will hear

• Asset group. A bundle of headlines, descriptions, images and video aimed at one theme, closer to an ad group in purpose than in behaviour.
• Asset. One individual piece inside that bundle, which is a narrower use of the word than ad assets has on a Search campaign.
• Audience signal. A hint about who is likely to convert. The campaign is free to serve outside it.
• Search theme. Words you supply describing what people look for. Not a keyword, and not exclusive.
• Listing group. Which products from a feed the asset group is allowed to advertise.
• Brand exclusion. A list that stops the campaign appearing on searches for named brands, including your own.

The brand traffic problem

Left alone, Performance Max will serve on searches for your own business name, and those are the easiest conversions in the account to win.

Somebody who searches for you by name has already decided. When an ad appears above your own listing and they click it, the campaign records a conversion it did very little to cause. Reports then show a campaign performing beautifully, and the improvement is partly a transfer from traffic you were getting anyway.

The fix is to exclude your brand, then look again a fortnight later. If results hold up, the campaign is finding new customers. If they collapse, you have learned what it was actually doing, which is a more useful thing to know than a flattering report. Where you do want to appear on your own name, put that on a Search campaign with negative keywords elsewhere, so the two jobs stay separate and countable.

It optimises towards whatever you told it counts

This campaign type takes your conversion setup literally, and a loose setup produces a confidently wrong campaign.

If every form open, every page view of a contact page and every click on an email address is being counted, the system will find people who do those things. It has no way of knowing which of them became customers. The result is a campaign reporting plenty of conversions while the phone stays quiet, and the problem is not the campaign at all. It is what you defined as a key event before you launched it.

For an online store this matters slightly less, because the purchase is unambiguous. For a service business it decides whether the whole thing works. Count the actions that mean somebody made contact, and count them once. Check that total against what arrives in your inbox before letting an automated campaign chase it.

What the reporting will tell you

Diagnosis is where this campaign type asks for the most patience, so it helps to know in advance what you are going to get.

You will see results by asset group, ratings on individual assets, and an insights section that groups the searches your ads appeared on into categories rather than listing them. Google has been adding reporting to this campaign type steadily, and each addition arrives after the campaigns have already been running for a while. What you will not get is the line by line view a Search campaign gives you, where a wasteful search term can be found and excluded the same afternoon.

Three things partly close the gap. Watch new against returning visitors on the website, because a campaign harvesting existing customers shows up there before it shows up in the ad account. Watch which landing pages receive the traffic, since the system chooses destinations from what you gave it and its choices are informative. And compare the period before launch with the period after at the account level rather than the campaign level. That is the only comparison that survives one campaign taking credit for another campaign’s work.

Where it fits

Performance Max suits a business with a product feed, a decent volume of conversions and no interest in managing placements. It suits a service business in a small area considerably less. There is not enough conversion data for the system to learn from, and the extra coverage it offers is coverage you may not want.

The honest summary is that it is a reasonable campaign type sold as a default. When somebody proposes it, the useful questions are what it will be excluded from, which conversions it will be judged on, and what it is replacing in the rest of the Google Ads account. Those three answers tell you more than any projection of what it will deliver.