Witold Litwin is Professeur Exceptionnel (the highest rank in France) at Université Paris–Dauphine and Director of Centre d'Etudes et de Recherches en Informatique Appliquée (CERIA). He is a Fellow of the ACM (the first in France), and a world authority of scalable data structures. He is the author of more than 150 publications and has contributed to or edited 11 books.