What Is OpenStack? A Beginner’s Guide to Its Origins, Architecture, and Growth

OpenStack Origins

OpenStack originated in 2010 when Rackspace and NASA jointly open‑sourced Rackspace’s cloud storage service, creating a community‑driven Infrastructure‑as‑a‑Service (IaaS) platform.

Release Naming

Since the first release “Austin”, OpenStack has issued 17 releases, each named after the host city of the Design Summit (e.g., Bexar, Cactus, Diablo … Zed). The alphabetical sequence starts with “A”.

Core Architecture

OpenStack provides compute, storage, and networking as services through a set of loosely coupled components that communicate via RESTful APIs.

Nova – compute service for provisioning and managing virtual machines.

Neutron – software‑defined networking.

Cinder – block‑storage service.

Swift – object‑storage service.

Keystone – identity, authentication and policy service.

Horizon – web dashboard for administrators and users.

Governance

The OpenStack Foundation (now the Open Infrastructure Foundation) oversees the project. It has a Board of Directors, a Technical Committee and a User Committee. Membership tiers include individual contributors, Platinum members (major corporate sponsors) and Gold members.

Adoption

As of the latest data, the community spans over 180 countries, 677 companies and more than 87 000 contributors. The code base exceeds 20 million lines. More than half of the Fortune 500 enterprises have deployed OpenStack, and over 75 % plan future use. Telecom vendors such as Huawei (FusionSphere) and ZTE (TECS) build commercial products on top of OpenStack.

Learning Resources

Official documentation is available at https://www.openstack.org. A single‑node installation can be performed using DevStack or the OpenStack Ansible playbooks. Hands‑on practice with Nova, Neutron and Cinder is essential for deeper understanding.