The Trade Desk is a global technology company that provides a self-service, cloud-based platform for ad buyers to manage digital advertising campaigns across various formats and devices. It acts as a demand-side platform (DSP), allowing advertisers to plan, execute, and optimize data-driven campaigns by using real-time bidding to purchase ad space on the open internet. Headquartered in Ventura, California, The Trade Desk was founded in 2009 and serves clients such as advertising agencies and brands.