WPP Group's media-buying arm, which controls $106 billion in global ad spending, last week promoted Xaxis CEO Brian Lesser to a big new job running its North America business. His elevation came
just two days after GroupM said it would acquire Essence, a digital media agency known for its
programmatic chops. The elevation of a trading desk CEO to a major cross-agency role is a first among agency holding companies. At rival agency groups, most such roles are still filled by executives
whose careers dev
eloped in the last decades of the 20th Century, when print, radio and television dominated.
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