Trueffect is a first-party targeting and media measurement company that helps address challenges in the current marketplace around third-party cookies being routinely deleted. It utilizes first-party technology that executes ads directly from the advertiser's domain to allow for personal targeting and measurement using their customer data. This provides advantages over third-party cookies like improved accuracy, persistence, and mobile integration. Trueffect also extends its framework to use multiple techniques like device fingerprinting and panel-based measurement to provide a buy-side measurement model for advertisers.