Viant Technology Inc. operates as an advertising software company. It provides Adelphic, an enterprise software platform that enables marketers and their advertising agencies to plan, buy, and measure advertising across channels, including desktop, mobile, connected and linear TV, in-game, streaming audio, and digital billboards. The company also offers Holistic, an omnichannel demand side platform for marketers and their agencies to manage omnichannel campaigns and access metrics from each channel to inform decisions in other channels; Viant Household ID, a household profile, which provides household insights for optimized bid decisions and touchpoint collection across consumer pathways, as well as offers holistic targeting and measurement across channels; World Without Cookies software to manage reach and frequency at the household level; and Viant Identity Graph, which reduces or eliminates the need for cookies by enabling matching of people-based identifiers that anchor digital identifiers that allows marketers to reach targeted consumers in a privacy-conscious manner. In addition, it provides Data lake, a software and self-service enables customers with differentiated insights, including conversion lift, multi-touch attribution, foot-traffic data reports, digital-out-of-home lift, sales reporting, and ROAS analytics; onboarding data integrations provides marketers with high match rates to audience insights for segmentation, targeting, and measuring outcomes; and self-service interface that provides customers with transparency and control over their advertising campaigns and underlying data infrastructure. The company sells its platform through a direct sales team focused on business development in various markets. It serves purchasers of programmatic advertising inventory; and large, independent, and mid-market advertising agencies. The company was founded in 1999 and is headquartered in Irvine, California.