Decide

Decide is a St. Louis-based advertising technology company - the rebrand of LockerDome, founded in 2008 - that runs a machine-learning platform called the Decision Marketplace. Rather than relying on third-party cookies or intrusive identity data, Decide lets multiple ML models compete in real time to select and price ad impressions, powering a two-sided marketplace that connects publishers and brands across the open web. Its widgets and content-recommendation units have reached over 100 million monthly users, positioning the company as a cookieless, performance-focused alternative to legacy programmatic ad stacks.