When we give sequence to different creatives under same Ad strategy, does this mean, each sequence creative will be delivered to same user as different impressions? If this is the case, will frequency cap play any role here?
Yes, each creative will be delivered to the same user as different impressions. Yes, the frequency cap plays a role here.
Example: You have 3 creatives in a sequence and the frequency cap is 4, the same user will see 1st creative on 1st visit and 2nd creative on 2nd visit and then the 3rd creative on 3rd visit, further on the 4th visit the user will again see 1st creative.
If the frequency cap is set to 2, the same user will see the 1st creative on 1st visit and then the 2nd creative on 2nd visit only.
However, in the above case it is not confirmed that the user will see the all the ads by the end of the day depending on the programmatic bidding.
Programmatic bidding would be for the ad slot. If the bid matches and the ads gets placed on the ad slot for display it will execute sequential creatives for the same day to the same user (which is not guaranteed). Each time the ad will populate, before that programmatic bidding plays the role for the ad slot to be won and ad to be displayed on the same.