What was the significance of splitting networking out of OpenStack Nova into its own API?
Not everything works better together, and this is true for networking and OpenStack Nova. Networking was previously hardcoded in a piece of Nova -- OpenStack's compute component -- in an arrangement that hindered the ability of networking and other infrastructure areas to evolve independently of one another because developers were forced to alter both compute and network features of OpenStack together.
OpenStack's contributors recognized this fact and decoupled the two technologies by breaking networking into its own set of application program interfaces, dubbed Quantum, with the September 2012 release of OpenStack Folsom, the open source project's sixth software release. This move has far-reaching significance. Quantum will inspire commercial products that will eventually address Layer 4-7 services, and these integrated products will start to play a role in the world of virtual networking.
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