Custom ads are served on Amazon DSP.
Explanation:
The correct answer is **True** because custom ads are specifically designed to be served through Amazon DSP (Demand-Side Platform), allowing advertisers to create tailored advertising experiences that align with their unique branding and messaging goals. Amazon DSP enables the delivery of these custom ads across various digital platforms, reaching audiences in a targeted manner. This capability enhances the effectiveness of advertising campaigns by leveraging data and insights to optimize ad placements. In contrast, marking the statement as false would inaccurately suggest that custom ads do not utilize the robust capabilities of Amazon DSP, which is essential for executing such personalized advertising strategies.