What are the three purchasing options for an In-Stream Video Ad?

In-Stream Video Ads on Twitter can be purchased through two primary methods. The first is Through the Auction—Biddable, which allows advertisers to bid for ad placements in real-time, offering flexibility and control over budget and targeting. This is a common purchasing model across many digital advertising platforms. The second option is Nielsen Demo Guaranteed (US only). This method provides advertisers with guaranteed delivery against specific Nielsen demographic targets, ensuring reach to a predefined audience in the US market. This option is ideal for advertisers prioritizing demographic accuracy and guaranteed impressions. The option "Twitter 'Best Price' matching algorithm" is not a recognized purchasing option for In-Stream Video Ads; Twitter does not offer a price-matching algorithm for ad purchases.