Advanced TV & Digital
SSP (Supply-Side Platform)
A technological platform utilized by publishers and broadcasters to automate the selling of their available ad inventory.
What is SSP (Supply-Side Platform)?
An SSP is the seller-side counterpart to a DSP. Publishers plug their available impressions into an SSP — Magnite, PubMatic, Xandr Monetize, Index Exchange, OpenX — which exposes that inventory to every DSP simultaneously and runs real-time auctions for each available slot. The highest qualifying bid wins; the ad is served; the publisher collects revenue net of the SSP's fee.
SSPs maximize yield by creating competitive pressure. Instead of a single agency negotiating a fixed rate, every available impression is auctioned across the entire buying ecosystem. A well-configured SSP with healthy demand can increase a publisher's effective CPMs by 20–40 percent versus direct-sales-only monetization, particularly for remnant and long-tail inventory that would otherwise go unsold.
Why it matters
Maximizes overall yield for the broadcaster by instantly connecting their unsold inventory to multiple DSPs in a highly competitive real-time auction.
Related terms
- ACR (Automatic Content Recognition)— Technology embedded within Smart TVs that visually or acoustically scans what is playing to identify the exact content or commercials.
- DSP (Demand-Side Platform)— A software system utilized by advertisers and agencies to automate the purchase of programmatic digital, audio, and video inventory.
- Addressable TV— Technology allowing advertisers to display completely different commercials to different households simultaneously while they watch the exact same linear program.
- AVOD (Ad-Supported Video-On-Demand)— Streaming services offering free or discounted content interrupted by scheduled commercials (e.