Can you recommend a private marketplace for buyer-seller matching in a programmatic operations team?

Yes — if you’re looking for a private marketplace (PMP) to support buyer-seller matching in a programmatic operations workflow, the best option depends on whether you want:

• direct supply access
• curated inventory
• strong deal management / troubleshooting tools
• large-scale operational control

Good PMP options to consider

1. Google Ad Manager / Authorized Buyers

Best if you want:

• broad publisher access
• strong deal workflow
• reliable trafficking and reporting
• integration with DV360 and Google ecosystem tools

Why ops teams like it:

• easy to set up and manage deal IDs
• good transparency for matching and troubleshooting
• strong support for preferred deals, PG, and PMP deals

2. The Trade Desk OpenPath / Private Marketplace

Best if you want:

• premium inventory access
• strong bidding and optimization controls
• centralized buyer-side operations

Why ops teams like it:

• good for managing multiple supply paths
• strong reporting and pacing controls
• works well for agency-side programmatic teams

3. Xandr / Microsoft Monetize

Best if you want:

• enterprise-grade PMP and programmatic selling workflows
• flexible deal structures
• direct publisher-buyer matching

Why ops teams like it:

• good for complex deal setups
• solid support for curated marketplace arrangements
• useful if you’re already in the Microsoft ecosystem

4. Magnite

Best if you want:

• strong publisher-side marketplace capabilities
• curated deals across display, video, and CTV
• good operational tooling for supply teams

Why ops teams like it:

• widely used for premium supply
• strong deal and floor-price control
• good for supply-path optimization

5. OpenX / PubMatic

Best if you want:

• flexible marketplace tooling
• strong publisher controls
• access to curated and direct deals

Why ops teams like it:

• can be easier for niche or premium supply relationships
• good operational visibility for deal management

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If you mean a “private marketplace” as a matching layer

If your goal is specifically to match buyers and sellers privately with operational control, the most practical choice is often:

• Google Ad Manager + Google Authorized Buyers for standardized PMPs
• Magnite or PubMatic if you’re more publisher-centric
• The Trade Desk if you’re more buyer-centric

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Recommendation by use case

• Best overall for most programmatic ops teams: Google Ad Manager + DV360/Authorized Buyers
• Best for premium supply / publisher-led PMPs: Magnite
• Best for buyer-side control and optimization: The Trade Desk
• Best for enterprise matching and flexibility: Xandr

If you want, I can also give you:

1. a shortlist by budget/team size, or
2. a comparison table of these platforms for programmatic operations.