The traditional way of designing and procuring hyper-scale networks has been seen almost as an outmoded concept since the advent of Software Defined Networking (SDN) and Network Function Virtualisation (NFV) but the key part of this wave, the use of open source operating systems for network switches and routers, is allowing a real “sea-change” in the industry.

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The OpenStack project was devised to help organizations build cloud-computing services leveraging standard hardware. Now it has become the largest open source initiative since Linux. Contributions are made by a huge community of architects and engineers as well as companies that have been providing code, applications, documentation, and usage feedback.

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