Augustin Chaintreau is an Assistant Professor of Computer Science at Columbia University. His research, by experience in industry, is centered on real world impact and emerging computing trends, while his training, in mathematics and theoretical computer science, is focused on guiding principles. He designed and proved the first reliable, scalable and network-fair multicast architecture while working at IBM during his Ph.D. He conducted the first measurement experience of human mobility as a communication transport tool while working for Intel and, as member of the Technical Staff of Technicolor (formerly, Thomson), showed that opportunistic caching in mobile networks can optimally take advantage of social properties.He is now working on internetworking social network services through distributed algorithms and opportunistic architecture, to vastly expand how your data and the web deal with everyday objects and your social environment. An ex student of the Ecole Normale Superieure in Paris, he earned a Ph.D. in mathematics and computer science in 2006. He has been an active member of the networking research community, serving in the program committee of ACM SIGCOMM, ACM CoNEXT, ACM SIGMETRICS, ACM MobiCom, ACM MobiHoc, ACM IMC, IEEE Infocom. He is also an editor for IEEE TMC, ACM SIGCOMM CCR, ACM SIGMOBILE MC2R.