The internet is marvelous technology of the computing world. The most exhaustive technology that internet dispense, is the Cloud Computing. It provides instrumental values to the customers and cloud service providers. With the advent of cloud computing the client uses the resources like hardware, software or storage, that are offered by other organization, instead of buying their own resources. However, these cloud services are provided by the cloud service providers by means of virtual machines. This study proposed the various aspects related to cloud computing technology. This paper includes the service model that reveals the various cloud services provides to different types of clients according to their requirements. This study provides the details of the layers in the architecture of cloud computing. Moreover, this study also includes the information about the various types of clouds.