I definitely agree that the Virtual managed services (VMS) in the cloud, as you had already established, based on a programmable network, it's a real great option. The AGC Research and AMI-Partner Study ( Cloud VPN & The Role of the Service Provider in Disrupting the VPN Market), strengthen any possible doubt to adopt this solution as an excellent tool of the trade, to shape the next generation of services for enterprises as you pointed out.

Excellent article, as the included links.