Exclusive negotiations in progress between performance agency and martech group.
Clients will be advised on which channels, and eventually media vendors, are causing the most carbon emissions in effort to slash advertising's carbon footprint.
Hagedorn has been with Omnicom since 2004 but is leaving the company.
All regions contribute to year-on-year recovery with the international business improving the most.
New offering aims to create experiences for multi-generational families and support customers on their parenting journeys.
Organic revenue decline of 7.5% in the last quarter of 2020 puts Havas in the middle of the holding companies to have reported so far.
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