Performance Max management for UK businesses

Performance Max is the Google Ads campaign type that spends one budget across Search, Shopping, YouTube, Display, Discover, Gmail and Maps, and lets Google decide where each pound goes. I set up and manage Performance Max (PMax) campaigns for UK online retailers and lead generation businesses, as part of my wider Google Ads services. The aim is a campaign that brings in sales or enquiries you would not otherwise have had, with enough visibility to show that it does.

What Performance Max does well, and where it falls short

PMax is built around a goal rather than a keyword list. You give it conversions to chase, a budget, creative and, for a shop, a product feed. Google’s bidding then chooses audiences, placements and searches auction by auction. When the conversion data is accurate and there is enough of it, that automation can find buyers in places that would be hard to reach by managing each channel separately.

The price is control and clarity. You cannot choose keywords as you would in a Search campaign, placements are largely Google’s call, and the reporting is thinner than in other campaign types. Left alone, PMax tends to drift towards the cheapest conversions available: people searching for your brand name, past customers who were coming back anyway, and shoppers who already had something in the basket. Those look excellent in the Google Ads dashboard and add little to the business.

Who Performance Max suits, and who it does not

It usually makes sense for:

• Online retailers with a healthy Merchant Center feed, more than a handful of products and order values passed back to Google Ads, so bidding can work towards revenue rather than order count.
• Lead generation businesses that know which enquiries turn into customers, ideally with qualified leads or sales imported from a CRM, so Google learns what a good lead looks like.
• Accounts that already run sound Search campaigns and want to reach buyers on YouTube, Discover and Gmail without building each channel by hand.

I would hold off if conversion tracking has never been tested, if the account records only a few conversions a month, or if the business depends on appearing for a narrow set of searches with carefully controlled wording, as many regulated professions do. In those cases a well-run Google search ads campaign is usually the better first step, and PMax can follow once there is data for it to learn from.

How I set up a Performance Max campaign

Measuring whether PMax is adding anything

The useful question is not how many conversions PMax reports, but how many would not have happened without it. I look at it three ways. I separate branded from non-branded results and compare total sales or enquiries before and after launch, not only the PMax line. I read the channel and search term reports Google now provides, to see where the money actually goes. And where the budget allows, I run a campaign experiment or a regional holdout to test incrementality directly.

If PMax is mostly collecting demand that Search or your organic listings would have caught anyway, I will say so and suggest where the budget would work harder.

Ongoing management

PMax needs fewer manual changes than older campaign types, but it still needs watching. Each month I:

• review search term categories and placements, adding negatives and exclusions where money is wasted;
• replace assets Google rates as low with new versions, changing one thing at a time;
• find products with spend and no sales, then fix them in the feed, move them to their own asset group or exclude them;
• check reported conversions against your shop platform or CRM, so bidding learns from real outcomes;
• adjust targets in small steps, because large jumps in a ROAS or cost-per-acquisition target unsettle what the campaign has learnt.

Performance Max problems I see most often on UK accounts

• Brand searches presented as growth. Without brand exclusions, a large share of reported revenue can come from people who typed the company name.
• Several PMax campaigns chasing the same products, splitting the data so none of them learns properly.
• Primary goals that include small actions such as add-to-basket, so the campaign learns to find browsers rather than buyers.
• Pages picked by final URL expansion that were never meant for paid traffic, such as blog posts, careers pages or out-of-stock products.
• Lead forms filling the CRM with spam, because the campaign was told every form submission is a success.

Most of these are settings changes. Spam leads are harder, because the fix sits in the form and in the conversion data, so your sales team needs to be involved. If the pages are the weak point, I can also build landing pages designed for paid campaigns alongside the campaign work.

What you receive

• A written setup plan covering conversion goals, asset group structure, exclusions and starting targets, agreed before anything goes live.
• The campaign built in your own Google Ads account, which stays yours.
• A monthly report that separates brand from non-brand, shows spend by channel and explains in plain terms what changed and why.
• A short monthly call to agree the next round of changes.