ABSTRACT
The chapter explains the reason computing is moving to the cloud. It also considers why a corporation would choose to adopt the cloud approach, and considers the three forms: public cloud, private cloud, and hybrid cloud. Finally, the chapter reviews the underlying technologies that enable the cloud approach. The chapter explains that a server waits for contact, and a client must use the server's IP address to contact the server. The largest companies often use a hybrid cloud approach in which the company runs its own private cloud facility for sensitive data, and uses a public cloud provider for non-sensitive data. Vendors offer a variety of cloud services, including data storage and data synchronization services. Companies have started to move to a generalized cloud computing paradigm in which the company moves its computing to facilities leased from a public cloud provider.
