Private Marketplace (PMP)

Paid Media

Also: PMP · Private Programmatic Deal · Invite-Only Marketplace

What it isInvite-only programmatic auction

Who gets inPre-approved buyers only

Versus open exchangeHigher quality, higher floor prices

Set up viaDSP and SSP deal IDs

Quick definition

A Private Marketplace (PMP) is an invitation-only programmatic ad auction where a publisher offers inventory to a select group of buyers rather than the entire open exchange. Buyers bid through a Demand-Side Platform (DSP) using a private deal ID, usually against a set floor price.

How it varies across Australia

PMP adoption among Australian advertisers sits well behind the open exchange and behind programmatic guaranteed deals, concentrated mostly in finance, automotive and travel categories chasing brand-safe premium inventory. Floor prices in PMP deals with premium Australian publishers typically sit meaningfully above open exchange rates for comparable placements.

Explore paid media benchmarks across Australian industries →

What it actually means

Think of the open exchange like a public auction house where anyone with a paddle can bid, and a PMP like a members-only auction where the publisher hand-picks who gets an invitation. Both use the same real-time bidding mechanics under the hood. The difference is exclusivity.

In a PMP, a publisher packages specific inventory (a homepage takeover, a premium content section, a curated audience segment) and offers it only to buyers they've approved. Each deal gets a deal ID, which the buyer plugs into their DSP to unlock access. A floor price sets the minimum bid, usually higher than open exchange rates because the publisher is trading reach for quality control.

PMPs sit between the open exchange and Programmatic Guaranteed on the transparency and control spectrum. Open exchange gives you scale and low cost per click (CPC) but little control over context. Programmatic Guaranteed gives you fixed inventory and fixed price with no auction at all. PMP splits the difference: you still bid, but only against buyers the publisher trusts, on inventory the publisher has vetted for brand safety.

The pitch is quality over quantity. Whether that's worth the premium depends entirely on what you're optimising for.

A PMP is a guest list, not a discount. You're paying for who else isn't in the room.

How it shows up

PMPs show up in your DSP as negotiated deal lines sitting alongside your open exchange campaigns, each tagged with a deal ID and a fixed floor price. You'll see them in publisher media kits as 'private deals' or 'curated marketplace' inventory. In reporting, PMP line items usually carry higher cost per mille (CPM) but often stronger viewability and completion rates than open exchange equivalents, which is the trade-off the deal is built on.

The Australian context

The Australian premium publisher landscape is small compared to the United States, which means PMP deal availability is more limited and floor prices carry less room for negotiation. News Corp Australia, Nine and Seven West Media run the bulk of local PMP inventory, often bundled with data segments through their own DSPs. For advertisers chasing brand-safe reach at scale in a market this size, header bidding on the open exchange with tight supply path controls sometimes delivers comparable outcomes for less.

Where people get this wrong

Assuming PMP inventory is automatically brand safe.A PMP controls who can bid, not what content the ad sits next to. Brand safety still needs its own verification layer regardless of deal type.

Running PMP deals without checking supply path overlap.The same impression can be resold through multiple intermediaries. Without supply path optimisation, a PMP deal can quietly pay a markup for inventory available cheaper elsewhere in the chain.

Treating the floor price as fixed and non-negotiable.Floor prices in PMP deals are a starting point for the publisher's sales team, not a law. Volume commitments and flight length both move the number.

Common questions

Is a PMP more expensive than the open exchange?

Usually, yes. Floor prices in PMP deals sit above open exchange rates because the publisher is trading scale for exclusivity and context control. Whether the premium is worth it depends on whether brand safety and placement quality matter more to you than reach and cost per click.

How is a PMP different from Programmatic Guaranteed?

A PMP still runs as an auction, just a restricted one, so price and delivery aren't guaranteed. Programmatic Guaranteed skips the auction entirely: you agree on a fixed price and fixed volume upfront, similar to a traditional direct-booked media buy but transacted through programmatic infrastructure.

Do I need a big budget to access a PMP?

Most publishers set minimum spend commitments for PMP deals, often well above typical open exchange test budgets. Smaller advertisers sometimes access PMP inventory through an agency or trading desk that aggregates spend across clients to meet the threshold.

Does a PMP guarantee my ads won't appear next to bad content?

No. A PMP restricts who can bid, not what content surrounds the ad. You still need brand safety verification tools and contextual targeting settings layered on top of any PMP deal to control adjacency properly.

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About New Rebellion

New Rebellion is a marketing intelligence consultancy. We build tools, score Australian businesses on how their marketing actually performs, and publish Debrief every day. This dictionary is part of how we work in the open.

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