Fabian E. Bustamante

Fabián E. Bustamante


Computer Science
Northwestern University

Director of Research

Phenix RTS
S. Mudd, 3509
2233 Tech Drive, 3rd Floor
Evanston, IL USA 60208

The principle of science, the definition, almost, is the following: The test of all knowledge is experiment. Experiment is the sole judge of scientific 'truth'. But what is the source of knowledge? Where do the laws that are to be tested come from? Experiment, itself, helps to produce these laws, in the sense that it gives us hints.

I do research on Internet-scale computer networks and distributed systems. My research approach is primarily experimental -- building and evaluating ideas in “the wild”. Much of my work focuses on improving the visibility of measurement on networked systems, leveraging this visibility to characterize them and the infrastructure they rely on, and designing new and improved systems based on the gained insight. As the forces shaping the Internet ecosystem are less purely technical, in recent years I have started to explore the interactions between pervasive networked systems and their broader context, from natural disaster, to political unrest and economics. more?

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Fabián E. Bustamante is a Professor of Computer Science at Northwestern University and Lead Scientist at Phenix, a Chicago-baserd startup focused on real-time video streaming, at scale. Fabián completed his M.Sc. and Ph.D. in Computer Science from the Georgia Institute of Technology in 2001. Before going to Georgia Tech, he studied and taught at the Universidad Nacional de La Patagonia San Juan Bosco (Argentina), from which he received both a 3-year and a 5-year-and-project degrees in computer science. His research interests span several areas of experimental systems, with a focus on networking and distributed systems. As part of their work, he and his research group have released tens of open-source systems that together have gained over 1.5 million users worldwide. Fabián is an ACM and IEEE senior member, a recipient of the National Science Foundation CAREER award and the Science Foundation of Ireland E.T.S. Walton Visitor Award.

Curriculum Vitae PDF

Recent and representative publications

A hop away from everywhere: A view of the intercontinental long-haul infrastructure
Esteban Carisimo, Caleb Wang, Mia Weaver, Fabián E. Bustamante, Paul Barford
Each at its own pace: Third-party Dependency and Centralization Around the World
Rashna Kumar, Sana Asif, Elise Lee, Fabián E. Bustamante
Global Mobile Network Aggregators: Taxonomy, Roaming Performance and Optimization
S. Alcalá-Marín, A. Raman, W. Wu, A. Lutu, M. Bagnulo, O. Alay, F.E. Bustamante.
ACM MobiSys 2022
Reining in Mobile Web Performance with Document and Permission Policies
B. Jun, F.E. Bustamante, B. Greenstein, I. Clelland.
ACM HotMobile 2022
Insights from Operating an IP Exchange Provider,
A. Lutu, D. Perino, M. Bagnulo, F.E. Bustamante.
A first look at the IP eXchange Ecosystem,
A. Lutu, B. Jun, F. E. Bustamante, D. Perino, M. Bagnulo, C. Gamboa Bontje. ACM SIGCOMM CCR 2020
Out of Sight, Not Out of Mind - A User-View on the Criticality of the Submarine Cable Network,
S. Liu, Z. Bischof, I. Madan, P. Chan, and F.E. Bustamante.
IMC 2020
Where Things Roam: Uncovering Cellular IoT/M2M Connectivity,
A. Lutu, B. Jun, A. Finamore, F.E. Bustamante, D. Perino.
IMC 2020
AMP up your mobile web experience: Characterizing the impact of Google’s Accelerated Mobile Project,
B. Jun, F. E. Bustamante, S-Y. Whang and Z. Bischof.
Mobicom 2019
The Value of First Impressions: The Impact of Ad-Blocking on Web QoE,
James Newman and Fabián E. Bustamante.
PAM 2019
Untangling the world-wide mesh of undersea cables
Z. Bischof, R. Fontugne, F.E. Bustamante.
HotNets 2018
The Growing Importance of Being Always On -- A first look at the reliability of broadband Internet access,
Z. Bischof, F. E. Bustamante, N. Feamster.
TPRC46 2018
Mile High WiFI: A First Look At In-Flight Internet Connectivity
J. Rula, F. E. Bustamante, J. Newman, A. Molavi Khaki, D. Choffnes.
WWW 2018

All publications


Winter 2024: CS-497 Internet-scale Experimentation
A seminar exploring the challenges with measurement and evaluation of large Internet-scale systems.
Mon/Thu 9:30-10:50AM

Previous Courses




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Selected Professional Activities

Program Committees


Other Professional Service

(A complete list can be found in my CV)


Random Bits

Borges y Yo | Borges and I