Dentsu this morning reorganized its data and technology operations, tapping Merkle's Shirli Zelcer as Chief Data and Technology Officer, joining the holding company's group management team.

Zelcer, who previously served as group head of analytics and technology at Dentsu's Merkle unit, will now be responsible for all of Dentsu's data and tech strategy and development.

In related moves, Dentsu promoted Shiva Vannavada to president of data and technology solutions from Global Chief Product and Technology Officer of Dentsu Solutions and hired Steve Simpson as president of data, audiences and technology from an undisclosed data and analytics role at Publicis.