The Windows Server® 2012 Hyper-V Network Virtualization Survival Guide is now published at

Windows Server 2012 enables you to create an agile, multi-tenant cloud on top of your existing infrastructure by virtualizing the network. Network virtualization decouples server configuration from network configuration to provide a virtual dedicated network to each tenant. This allows seamless migration of workloads, while continuing to provide security isolation between tenants. Partners have the opportunity to become multi-tenancy aware and provide the next generation of services, devices, appliances, both physical and virtual, to augment and complete the Windows offering to build secure, scalable, multi-tenant public and private clouds.

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