# Supply-side platform

Concept · [Business and metrics](https://ecosystem.samcarlton.com/business)

Also called: SSP, SSPs, supply side platform

Software that websites and apps use to sell their ad space automatically to many buyers at once.

**For example:** A local news site connects to a supply-side platform so each ad slot goes to the highest bidder.

## Connects to (4)

- [Programmatic advertising](https://ecosystem.samcarlton.com/programmatic-advertising): Buying and selling online ad space automatically through software, often in auctions that run in a fraction of a second as a page loads.
- [Demand-side platform](https://ecosystem.samcarlton.com/demand-side-platform): Software that advertisers use to buy ad space across many websites and apps automatically, with targeting and budget rules.
- [Ad exchange](https://ecosystem.samcarlton.com/ad-exchange): The digital marketplace where ad space from sellers is auctioned to advertisers in real time.
- [Google Ad Manager](https://ecosystem.samcarlton.com/google-ad-manager): Google's platform for websites and apps that sell ad space, to manage and show ads on their own pages.

Map view: https://ecosystem.samcarlton.com/supply-side-platform