Software Defined WAN, or SD-WAN for short, is the new big thing in business networking. Everybody's talking about SD-WAN, and about what it can do for businesses. Well, there's no doubt that SD-WAN can do a lot for your business; in fact, we'll be talking about exactly that in part 2 of this 3 part blog series. But before we do that, we need to talk about what SD-WAN can't do. Right now there's a popular misconception among businesses concerning SD-WAN - a misconception fed and sustained by headlines and marketing hype - that could lead them to take damaging shortcuts in incorporating SD-WAN into their business.