Outcome based buying is expanding to include pay per Active View
A new outcome based buying option will give the choice to be billed based on viewable impressions, measured by Active View. Pay per Active View will be available when you use a bid strategy that targets conversions (target CPA and Maximize conversions).
Open auction inventory for audio line items available through Google Ad Manager
Open auction inventory will soon be available for audio line items via Google Ad Manager. To access open auction inventory enable all audio exchanges at the Partner level, then target Google Ad Manager in the Public inventory section of an audio line item. Advertisers can layer their buying with standard targeting capabilities such as Google Audiences, device targeting, and geography targeting.