What best describes Amazon's video advertising supply beyond owned properties?

Amazon's video advertising supply extends significantly beyond its owned and operated properties. Through Amazon DSP, advertisers gain access to a vast network of premium publishers and open internet inventory. This includes major media companies like Netflix, FOX, NBC Universal, and Warner Bros Discovery, offering a broad reach to diverse audiences. The supply chain is transparent, allowing advertisers to understand where their ads are being placed. The option stating "Limited to Amazon properties only" is incorrect because Amazon actively partners with external publishers. "Only available through third-party ad networks" is also incorrect; while Amazon DSP integrates with various sources, it is Amazon's platform that facilitates this access directly, not solely through third-party networks.