Signal

Leading enterprise CDP and identity resolution provider within the TransUnion marketing solutions ecosystem

Signal (formerly BrightTag) is a customer data platform (CDP) and identity resolution company that operates within the advertising technology ecosystem. The company provides data onboarding, identity resolution, and audience activation solutions that help brands unify customer data across channels and activate it for marketing and advertising purposes. Signal's platform enables marketers to collect, standardize, and activate first-party data while maintaining compliance with privacy regulations. The company has positioned itself as a key infrastructure provider in the evolving privacy-first advertising landscape, helping brands reduce reliance on third-party cookies through enhanced first-party data strategies. Signal serves major brands and agencies by providing tools for real-time data collection, identity graph management, and omnichannel audience activation. The platform integrates with major marketing clouds, DSPs, and data warehouses to enable seamless data flow across the marketing technology stack. Signal was acquired by TransUnion in 2016, becoming part of TransUnion's marketing solutions division, which has strengthened its position in the identity resolution and data onboarding market.