Private Cloud: What, Why, and How discusses private cloud computing. It defines private cloud and compares it to highly virtualized computing environments. The document discusses how to get started with private cloud computing using tools like System Center and Hyper-V. It provides an example of how to deliver HR services using a private cloud architecture with shared resources, roles, and self-service provisioning. The presentation emphasizes that private cloud allows organizations to build on existing investments while gaining agility and economies of cloud computing.