'Silicon Valley’s favourite ad man' is honoured by friends and colleagues.
The appointment follows a closed process across several global markets.
The global chief operating officer's departure comes amid an ongoing restructure at GroupM.
Substantial planned media investments will be made in over 100 markets including Southeast Asia, South Korea, and India among others.
EssenceMediacom X was the incumbent agency.
Industry leaders weigh in on what Dentsu, Omnicom, Publicis Groupe and Interpublic Group results mean for media.
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