Request an Account

Flexible, scientific infrastructure for research on the future of cloud computing. Researchers use CloudLab to build their own clouds, experimenting with new architectures that will form the basis for the next generation of computing platforms.

Recent News

January 5, 2024
Reservations in CloudLab are now per-user; see the news post for details.
May 16, 2023
We're creating a user feedback group to help guide development of the platform and improve its usability. You can sign up via this short form
May 08, 2023
We've rolled out new standard disk images with newer OS versions, bigger root filesystems, and more.
September 29, 2022
A Tofino switch (supporting p4 in hardware) is available at Utah.
Cluster Status
Utah ---
Clemson ---
Wisconsin ---
Apt ---
Massachusetts ---
Emulab ---
Experiments Now -
Projects -
Users -
Profiles -
Experiments -

Build Your Own Cloud …

CloudLab provides researchers with control and visibility all the way down to the bare metal. Provisioning an entire cloud inside of CloudLab takes only minutes. Most CloudLab resources provide hard isolation from other users, so it can support hundreds of simultaneous "slices", with each getting an artifact-free environment suitable for scientific experimentation with new cloud architectures. Run standard cloud software stacks such as OpenStack, Hadoop, and Kubernetes. Or, build your own from the ground up. The bare metal's the limit!

CloudLab is built from the software technologies that make up Emulab and parts of GENI, so it provides a familiar, consistent interface for researchers.

  Learn about the technology

… On Our Hardware

The CloudLab clusters have almost 1,000 machines distributed across three sites around the United States: Utah, Wisconsin, and South Carolina. In addition, it provides access to a number of federated facilities around and outside of the US. CloudLab is interconnected with nationwide and international infrastructure from Internet2, so it is possible to extend private, software-defined networks right to every server.

CloudLab interoperates with existing testbeds including GENI and Emulab, so you can take advantage of hardware at dozens of sites around the world.

  Take a look at the hardware

Recent Papers Using CloudLab (see all --)

Research Using CloudLab

CloudLab is used for transformative research in cloud computing, distributed systems, networking, databases, security, and many more fields of computing. Hundreds of papers have been published that used CloudLab for development and/or evaluation: take a look at the full list.

Researchers and educators from hundreds of institutions and almost every US state use CloudLab. And, while most of CloudLab's users are in the US, it also supports research and education around the world!

CloudLab Users Across the United States

CloudLab Users Around the World

What Does it Mean to Build a Cloud on CloudLab?

When you build a cloud on CloudLab, you get a slice of the facility. In that slice, you have full control. This means you can run a full suite of cloud software of your own—compute, networking, and storage. That suite might look like one of today's cloud software stacks (for example, maybe it's an instance of OpenStack), it might be an incremental improvement to today's stacks (for example, replacing the storage layer), or it might be something radically different, built from the ground-up to support features like real-time computing, integration with cyber-physical systems, high performance computing, or energy awareness. Your cloud might be only for your own use as you experiment with your new architecture, or you could open it up to other users to get real application workloads.

CloudLab is built around profiles. A profile is a description of everything needed to build a cloud: the physical hardware (servers, disks, switches) and the software needed to transform it into a particular type of cloud. A profile is fully packaged and automated: building a cloud from scratch may take only minutes, depending on its size and complexity. CloudLab will provide "stock" profiles for several popular cloud software stacks, but users can modify these or build their own from scratch.

Is CloudLab Right For Me?

CloudLab is a testbed designed to allow researchers to experiment with cloud architectures and the new applications that they enable. It is built for running experiments that will lead to new capabilities in future clouds, or to a deeper understanding of the fundamentals of cloud computing. This means that it is ideally suited to experiments that cannot be run in traditional clouds because they require control and/or visibility over parts of the system that would be “givens” in other clouds, such as the virtualization, storage, or network layers. See our AUP for more details.

The CloudLab Team

CloudLab is a project of the University of Utah, Clemson University, the University of Wisconsin Madison, the University of Texas at Austin, the University of Massachusetts Amherst, and US Ignite.

We've built widely-used testbeds for the computer science research community for decades, including Emulab, parts of GENI, and Apt. We're also heavily involved in reaching out to the community of computational research through the ACI-REF initiative, next-generation applications with transformative public benefit through US-IGNITE.

CloudLab is part of the National Science Foundation's NSFCloud program.

CloudLab Leadership

Contact Us

We recommend that users of CloudLab join the cloudlab-users mailing list. The list has a searchable archive, and is a good place to direct questions that are of general interest to CloudLab's user community. For questions that are not of general-interest, such as questions about individual accounts or experiments, send mail to

General inquiries or comments about CloudLab (not support-related) can be directed to

Acceptable Use Policy (AUP)

The Acceptable Use Policy for CloudLab can be found here.