2.2.14 Cloud computing
Cloud computing is another way to manage, store, and access data.
Cloud computing involves large numbers of computers connected through a network. Cloud computing providers rely heavily on virtualisation to deliver their services. It can also reduce the operational costs by using resources more efficiently. These companies provide four distinct categories of services. The table below outlines each category in more detail
Table 4 Categories of cloud computing services
|Software as a Service: Applications delivered over the web to the end users.||Platform as a Service: Tools and services used to deliver the applications.||Infastructure as a Service: Hardware and software to the power servers, storage, networks and operating systems.||IT as a Service: IT professionals support applications, platforms and infastructure.|
Cloud computing allows the users to access their data anywhere and at any time. You are probably already using some form of Cloud computing if you use web-based email services.
Cloud computing also enables organisations to streamline their IT operations by subscribing only to needed services. By using Cloud computing, the organisations may also eliminate the need for onsite IT equipment, maintenance, and management. Cloud computing reduces costs for organisations. It reduces equipment costs, energy costs, physical plant requirements, and support personnel training needs.