When competing for the same ad unit, if the Ad Rank of a cost–per–thousand impressions (CPM), placement–targeted ad is higher than the combined Ad Rank of all competing keyword–targeted ads, then the:
- placement-targeted ad will be the only ad to appear in the ad unit
- keyword-targeted ad will appear above the placement-targeted ad
- placement-targeted ad will appear above the keyword-targeted ad
- keyword-targeted ad will be the only ad to appear in the ad unit
When competing for the same ad unit, if the Ad Rank of a cost–per–thousand impressions (CPM), placement–targeted ad is higher than the combined Ad Rank of all competing keyword–targeted ads, then the
Explanations:
Placements and keywords can team up to determine where your ads will appear on the Display Network and how much you’ll pay for them. You can choose to show your ads based only on your keyword list, while using placements to adjust your bidding. Or, you can use a combination of placements and keywords to refine where your ads are eligible to show. Using both together helps you narrow the audience for your ads, and set the right price for clicks from those potential customers.
https://www.youtube.com/watch?v=y1nnWieOHH0