Through the coming years, I really hope the SDN community will continue to evolve standards quickly, and systems will stay implementation-focused around rough consensus and running code. Most of all, I hope that everyone — from the people implementing OpenFlow controllers and clients to chip-set vendors that are building spectacularly cool data path functionalities -- continue to think about applications. There is an unfortunate tendency in building standards to avoid exposing features that you may regret and have to support later.
My sense is that applications will make SDN succeed. The more functionality you can give application developers, the more they will make SDN work for everyone.
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