Omnicom Group led all of its peers in the total value of its creative and media business wins last year. In this episode, its digital chief Jonathan Nelson talks about the data and technology strategy that contributed to those wins and recent changes in the marketing technology ecosystem. This episode is supported by Acxiom.

In the latest episode of AdExchanger Talks, mParticle CEO Michael Katz talks about the vision behind mParticle, his three-year-old startup that consolidates data feeds in the fragmented app ecosystem. (He describes it as an "API of APIs.") Katz sold his previous startup Interclick to Yahoo in 2011, and in this episode he also describes how he's doing things differently the second time around. This episode is supported by Acxiom.

Wunderman's competitive set is huge, since it competes in areas like data architecture (Acxiom, Epsilon), consulting (Accenture, Unbound) and digital creative (AKQA, SapientRazorfish). In this episode, North America CEO Seth Solomons talks about the agency's approach to machine learning, client data hygiene and measuring walled gardens. This episode is supported by Acxiom.

Sourcepoint once solely focused on helping publishers solve for ad blocking. Today it's pushing into subscription enablement for those media companies – and even bundling subscriptions across publishers. CEO Ben Barokas discusses his company's latest funding, its mission and trends in ad blocking and publisher monetization. This episode is brought to you by Acxiom.