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Performance Max for e-commerce

Performance Max that spends on incremental demand

Asset-group structure, brand exclusions, feed-only vs assets, reporting limits.

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Pain points

Where you lose money

A black box you can't steer

Performance Max hides placement and query data, so you're spending without seeing where. Optimisation becomes guesswork against a campaign that won't show its work.

It cannibalises your brand

Left unchecked, PMax harvests your own brand searches and reports them as wins. You pay a premium for traffic that would have converted for free.

Feed-only vs assets confusion

Whether to run feed-only or add asset groups changes results dramatically, and the default setup rarely matches the store's actual goal.

Reporting limits hide the truth

Aggregated reporting makes it hard to separate incremental sales from existing demand, so ROAS looks great while incremental growth stalls.

Channel mix

What we'd run

Feed-first setupfoundation

PMax lives on the feed, so we get feed structure right before spending, it decides where and how products serve.

Brand exclusionsprimary

We exclude brand terms so PMax spends on incremental demand instead of harvesting searches that would convert for free.

Asset groups vs feed-onlyprimary

We choose feed-only or asset groups to match the actual goal, rather than accepting the default that rarely fits.

Incrementality reportingcompounding

We build reporting that separates incremental sales from existing demand, so ROAS reflects real growth, not the black box's spin.

FAQ

PMax is a black box, how do you control it?

Through the inputs Google does expose: feed quality, asset groups, audience signals, and brand exclusions. Most PMax waste is brand traffic Google claims as new, we split that out first.

Will PMax cannibalise my brand search?

It will if you let it. We exclude brand terms so PMax earns incremental sales instead of taking credit for buyers who'd have found you anyway.

How is spend allocated?

We separate high-margin and hero products into their own asset groups so budget follows profit, not just conversion volume Google optimises toward by default.

What do you need from me to start?

A clean product feed, margin data by category, and Merchant Center access. Feed quality decides PMax's ceiling more than budget does.

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