Clean roomsAcquired · WPP
InfoSum
Data clean room pioneer that lets companies match data without sharing it; acquired by WPP in 2025.
London, UK · founded 2016 · infosum.com
What InfoSum does
InfoSum built a data clean room in which data never leaves each party's control; matching happens through privacy-preserving computation. Broadcasters and publishers used it to let advertisers target their audiences.
WPP bought it in April 2025 to strengthen its data offering for clients.
How it makes money
Platform subscriptions (now within WPP).
Where it meets invalid traffic
Not a fraud product; clean rooms can support verification of audience and outcome claims.
Products
- InfoSum Platform