When should an advertiser,who's using Campaign Manager 360 to run an in-stream video adcampaign,consider activating default ads for placement?

The advertiser using Campaign Manager 360 for an in-stream video ad campaign should consider activating default ads for placement"when serving ads to any user or device."Default ads are essential fallback creatives that ensure continuous ad delivery in case targeted ads cannot be served for any reason,such as specific targeting criteria not being met or technical issues with the primary ad creatives.By activating default ads for placement across any user or device,the advertiser ensures that there are no gaps in ad delivery,maximizing the campaign's reach and effectiveness.This strategy is particularly crucial in dynamic digital advertising environments where ads need to be adaptable to varying user behaviors and device types.Activating default ads helps maintain consistent visibility and engagement,ensuring that the advertiser's message reaches the intended audience even when specific targeting conditions cannot be fulfilled.Therefore,selecting this option aligns with best practices in campaign management within Campaign Manager 360,emphasizing reliability and continuity in ad serving to optimize overall campaign performance and effectiveness.