The news: WPP has acquired InfoSum, bringing a privacy-first clean room provider into GroupM’s portfolio as it doubles down on AI and data ownership.

• The acquisition allows WPP to embed InfoSum’s privacy-preserving tech into its own stack, enabling clean rooms to be built and operated within client ecosystems.
• InfoSum’s notable client relationships with Netflix, Samsung Ads, and TransUnion will be integrated into WPP Open, the company’s AI-powered marketing engine.