Viant Technology (NASDAQ: DSP) builds an AI-powered, buy-side programmatic advertising platform used by brands and agencies to plan, buy, and measure campaigns across channels, with a focus on connected TV. Its offering centers on a demand-side platform with identity, data, and measurement tools, sold on a software and media-transaction basis. Founded in 1999 and headquartered in Irvine, California, it operates as a public company.