Your client developed new audio ads for their department store,and you recently launched a Programmatic Guaranteed deal to support those ads.After the campaign,yourclient reviewed their Brand Lift Study in Display&Video 360 and didn't see any significant results.Why could that be?

The correct answer is that Programmatic Guaranteed deals cannot measure Brand Lift. Brand Lift studies in Display & Video 360 are typically available for open auction or private auction deals where Google has more control over the ad serving and survey distribution. Programmatic Guaranteed deals are pre-negotiated, fixed-price deals for specific inventory, which often limits the ability to integrate Google's Brand Lift measurement tools effectively. Audio ads can indeed measure Brand Lift, as the methodology focuses on brand perception changes regardless of the ad format. The report appearing for several days is a common delay but doesn't explain a complete lack of significant results. Finally, Brand Lift measurement is supported by Display & Video 360, but its availability depends on the campaign type and deal structure.