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A project originally started by NASA and Rackspace for delivering a cloud computing and storage platform. Today, OpenStack is a global collaboration of developers and technologists producing an open source cloud computing platform for public and private clouds.

The technology consists of a series of interrelated projects delivering various components for a cloud infrastructure solution. OpenStack software delivers a massively scalable cloud operating system consisting of three major components:

During the course of the past year, OpenStack has attracted more than 90 member organizations, including Dell, Citrix, Cisco and HP.

See also "A Cloud Computing Dictionary Resource" in Webopedia's Quick Reference section.

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