The industry often talks about how the data center perimeter is expanding,necessarily, due to technological shifts such as cloud and mobility and BYOD. But that isn’t really the case. If you look closely, you’ll see that the perimeter is actually shrinking, getting tighter and tighter around the data center. With just about everything web-enabled these days, the need for access to network to enable access to applications is, well, nearly gone. I can as easily share a file via a web-enabled application today as I could by copying it onto a network share using a VPN last year. With mobile devices inside the corporate walls as well as out, it’s no longer effective to just implicitly trust what’s on the local network.