What’s a best practice to follow when designing an experiment to test Performance Max campaigns?

Question: What’s a best practice to follow when designing an experiment to test Performance Max campaigns?

  • Create a new CPA or ROAS goal for Performance Max campaigns to achieve.
  • Keep Performance Max budget limited to 10% of other campaigns’ budgets.
  • Optimize Performance Max to a comparable CPA or ROAS target to other campaigns.
  • Run the Performance Max experiment for one to two weeks before evaluating results.

The right answer was: Optimize Performance Max to a comparable CPA or ROAS target to other campaigns.

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