The festival adds three names to its list of presidents who will lead the juries to award Lions for both 2020 and 2021 this June.
WPP is Holding Company of the Decade after scooping annual title for seven straight years.
The Tokyo-based agency has won Grand Prix, Titanium and Lions in many other categories over the past decade.
The journey of Publicis chairman & CEO Arthur Sadoun and his predecessor Maurice Lévy to an empty Cannes features in a short mock film to promote the Groupe's Cannes-Do awards.
The Kiwi creative agency has been awarded a grand total of 99 Lions over the past 10 years.
"It's become clear that creative matters more than ever right now."
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