The Cloud Computing is a tool to help us share resources among the consumers, partners, and vendors in the value chain. The resource sharing at various levels results in various cloud offerings such as infrastructure cloud (e.g. hardware, IT infrastructure management), 'software cloud (e.g. SaaS focusing on middleware as a service), application cloud (e.g. Application as a Service, social network as a service), and business cloud (e.g. business process as a service).
Apple has launched a brand-new service called iCloud. This service is a "cloud" based service that allows the user to store data for access by their Apple and non-Apple devices. This service acts as a hub for music, photos, applications, documents, eBooks, contacts, and email and calendar data.
Tthe cloud represents an amount of server space hosted by Apple, accessible through several services including email, calendars, iTunes, the Apple App Store, and Photo Stream, amongst others in the future. The space one has is not reduced by purchased music, apps, books, and photos in the Photo Stream.