When Display & Video 360 serves a data-driven display ad, it looks for a rule match from top to bottom. If there's a match, the variant assigned to that rule serves. If there's more than one variant, eligible variants are rotated evenly across impressions.
In other words, Display & Video 360 shows the ad that is most relevant to the user, based on the rules that you create. If there are multiple ads that are equally relevant, Display & Video 360 shows them all evenly.
How priority groups work
- Display & Video 360 checks the priority groups in order.
- If a priority group has rules that are true, Display & Video 360 shows all of the variants that are assigned to those rules.
- If no rules are true, Display & Video 360 checks the next priority group.
- If no priority groups match, Display & Video 360 shows the variants that are assigned to the "Everyone else" group.
Examples of how rules and priority groups work
Imagine your feed looks like the following example.
The feed has two priority groups:
- The first group has rules for the audience segments fashionistas and fast followers located in New York or California.
- The second group has scheduling rules. One schedule is between June 25, 2018 and July 1, 2018. The other schedule is for any date after July 1, 2018.
Example 1: Matching rules in more than one priority group
Imagine the person looking at the ad is a fashionista and a fast follower. They're in New York, and the date is June 26, 2018.
In this case, the person fits the audience segments highlighted in blue and yellow: fashionista and fast follower audiences in New York, between June 25, 2018 and July 1, 2018. But only the segments in yellow serve because they're in the higher priority group. For this and similar impressions, all variants assigned to fashionista and fast follower audience segments serve evenly.
Example 2: Matching rules in a lower priority group
Imagine the person looking at the ad is a fashionista and fast follower. They're in Chicago, and the date is June 26, 2018.
In this case, the person fits the audience segments highlighted in blue: the date is between June 25, 2018 and July 1, 2018. For this and similar impressions, all variants assigned to that schedule rule in priority group 2 serve evenly.
Example 3: No matching rules
Imagine the person looking at the ad is a fashionista and fast follower. They're in Chicago, and the date is May 18, 2018.
In this case, the person doesn't fit any of the rules in either priority group. All variants assigned to the "Everyone else" group serve evenly.
