Cloud storage is a model of data storage where the digital data is stored in logical pools, the physical storage spans across multiple servers (and often locations), and the physical environment is typically owned and managed by a hosting company. These cloud storage providers are responsible for keeping the data available and accessible, and the physical environment protected and running. Cloud storage component give the accessibility to cloud storage server, access all storage resource by using your custom apps.  Messaging component providing the access communication protocol between client to client application.