This document discusses hybrid IT and cloud computing. It begins by defining key terms like hybrid cloud, which combines internal and external cloud services. It then discusses potential benefits of public cloud services like reduced capital expenditures and improved scalability. However, public cloud adoption faces challenges around security, compliance, and integration. The document outlines how a hybrid IT model can address these challenges by enabling organizations to broker a mix of internal and external IT services. It argues that a hybrid IT management solution is needed to monitor services across private and public clouds and provide transparency on costs. Finally, the document introduces Vistara as a platform that can help with unified management of hybrid cloud environments.