Viant spends $40M to add TVision attention data

The immediate effect is a broader data layer inside Viant’s DSP, with TVision’s audience measurement and attention signals now tied to its AI-powered ad platform. That matters because Viant is explicitly using the acquisition to argue for a stronger alternative to walled gardens while courting performance marketers. For the streaming ad stack, the move ties measurement more tightly to buying decisions rather than treating it as a separate layer. Watch for how Viant describes TVision’s data inside the platform and whether it emphasizes attention measurement in future product or sales messaging.