illumin Holdings Inc. is a technology company that enables marketers to connect intelligently with audiences across video, mobile, out-of-home, social, connected TV and online display advertising campaigns. Its Programmatic Marketing Platform, powered by proprietary machine learning technology, is at the core of its business, accompanied by solutions for analytics-led video and mobile targeting that leverage data. It helps marketers by offering real-time reporting and analytics. Its customers include both agencies and brands, including large Fortune 500 enterprises and small to mid-sized businesses. Its technology enables programmatic advertising, which is the automated buying and selling of advertising inventory electronically. The platform allows advertisers to optimize their purchasing of digital advertising in real-time using programmatic ad buying, a method of buying digital advertising in which ad spots (called impressions) are released in an auction that occurs in milliseconds.