ATD(Agency Trading Desk) is a kind of Advertiser solutions. Trading desks are media buyers and re-sellers within an ad agency that help advertisers execute programmatic media buys.

• They use either proprietary technology or a demand side platform to buy and optimize media campaigns on ad exchanges, ad networks and other inventory sources.

To be updated later...

You may want to know more about real-time bidding system composed of DSP, SSP, DMP, ATD and ITD.  Please refer following associated information for more information: