OpenStack

OpenStack is the industry-standard open-source platform for orchestrating massive pools of compute, storage, and networking resources through a unified API.

This modular framework powers some of the largest infrastructures on the planet: CERN manages over 300,000 cores using it, while Walmart relies on it for massive retail scale. It functions as a comprehensive cloud operating system where core services like Nova (compute), Neutron (networking), and Swift (object storage) automate data center hardware. By integrating with tools like Kubernetes and Terraform, OpenStack provides a vendor-neutral foundation for both private and public clouds, giving operators total control over their resource lifecycle without the lock-in of proprietary stacks.

https://www.openstack.org