Supply via private marketplaces (PMPs) is only available to Amazon DSP managed service users.

This statement is false. Private marketplaces (PMPs) are available to all Amazon DSP users, regardless of whether they utilize managed services or self-service. PMPs offer advertisers exclusive access to premium inventory from specific publishers at negotiated prices, providing more control and transparency than open exchanges. Both managed service clients, who have Amazon teams handle their campaigns, and self-service users, who manage their own campaigns, can leverage PMPs to secure desirable ad placements. The availability of PMPs is a core feature of the Amazon DSP platform, not an exclusive offering for managed service clients.