Kubient, a full-stack digital audience marketing platform, agreed to acquire Fidelity Media, a marketing and advertising company. Financial terms were not disclosed. "Kubient's first-in-class Audience Cloud is built to provide an open transparent marketplace for both buyers and sellers. Fidelity Media's fmxSSP and header bidding capabilities are welcome additions to our already powerful marketplace offerings, and we look forward to providing even more options to Fidelity's robust client list," Peter Bordes, Chief Executive Officer of Kubient.