Foreword
What is Software Defined Networking and why has it created so much hype in the networking industry? For a term that was coined more than 5 years ago, it seems like it should be a simple question to answer by now. However, as with other technology terms like cloud, after marketing teams have years to reshape the term for their own purposes, it becomes nearly impossible to discern its meaning. To add to the confusion, a variety of related terms have popped up such as open networking, programmable networks, and software-driven networks. This leaves many people wondering what SDN really is and if there is actually anything of substance behind the hype.
For people like myself who have been knee-deep in SDN since the beginning, it is easy ...
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