Drawbridge

Leading independent cross-device identity platform before acquisition

Drawbridge was a pioneering cross-device identity resolution company founded in 2010 that developed sophisticated probabilistic matching technology to identify and connect users across multiple devices including smartphones, tablets, and desktop computers. The company's platform enabled advertisers and marketers to understand consumer behavior across the fragmented device landscape, allowing for more accurate targeting, attribution, and measurement of advertising campaigns. Drawbridge was known for its privacy-conscious approach that didn't rely on deterministic identifiers like logins, instead using machine learning algorithms to analyze behavioral patterns and device characteristics. In February 2019, Drawbridge was acquired by LinkedIn (owned by Microsoft) for an undisclosed amount. Following the acquisition, Drawbridge's technology and team were integrated into LinkedIn's advertising and marketing solutions division. The acquisition allowed LinkedIn to enhance its cross-device tracking capabilities and improve attribution for its advertising products. The Drawbridge brand was eventually sunset as its technology became part of LinkedIn's broader advertising infrastructure. Drawbridge's legacy in the AdTech industry was significant, as it was one of the early innovators in solving the cross-device identity challenge during the mobile advertising boom. The company raised approximately $67 million in venture funding before its acquisition and served major brands and advertising platforms seeking to understand multi-device consumer journeys in an increasingly fragmented digital landscape.