Integral Ad Science Holding Corp. is a digital advertising verification company based in the United States. It provides the IAS Signal cloud-based platform, which helps customers maximize ROAS by verifying ads and delivering independent measurement and verification across devices, channels, and formats such as desktop, mobile, connected TV, social, display, video, and emerging media. The company also offers digital media quality solutions including ad fraud detection and prevention, viewability and attention, brand safety and suitability, contextual targeting, inventory yield management, and reporting. Founded in 2009 and headquartered in New York, New York, it serves advertisers and agencies, publishers, and supply-side platforms (SSPs), with additional locations in Chicago, San Francisco, São Paulo, London, Dublin, Paris, Berlin, Madrid, Milano, Singapore, Stockholm, Eveleigh, Tokyo, Pune, and the Nordics.