It’s hard to visit an IT journal web site without stumbling upon an SDN fairy tale. Here’s another one:
The idea is to cut away the manual process of setting up new firewalls, load balancers and other network appliances, and instead open the door to provisioning a new network infrastructure within a few minutes.
And why exactly is it that you can’t do that today?
- Because the application developers never specified what network services they need, forcing the deployment team to waste time reverse-engineering the environment.
- Because the application teams never took the ownership of network services.
- Because everyone uses a single humongous firewall or load balancer (well, make that two for redundancy) because we don’t know how to manage a thousand small firewalls;
- Because the humongous firewall became the brittle holy cow that you can touch only every fifth Friday of the month at 5:05 (otherwise a crash might bring down the whole data center).
While new technology might help you get the job done quicker, no amount of shining magic and unicorn dust peddled by vendor marketers will solve your problems until you realize it’s time to change the processes and responsibilities.