This document discusses private cloud architectures and service management. It defines private clouds as trusted, controlled, reliable and secure virtualized infrastructure similar to public clouds. Private clouds can reduce costs compared to current infrastructure by 60-70% through server consolidation, virtualization and reduced facilities/energy costs. The document outlines a private cloud maturity model moving from consolidated infrastructure to business-aligned infrastructure. It also describes cloud service layers, catalogues, lifecycles and integrated service management architectures.