iCloud has evolved from previous Apple services called iTools, .Mac, and MobileMe. It was first mentioned by Apple in May 2011 and became available in October 2011. iCloud uses a platform as a service model to allow applications to run in the cloud without needing to install software locally. It provides services like Contacts, Calendar, Mail, Apps, iBooks, Backup, and additional services like iTunes Match and Find My iPhone. The document concludes that iCloud offers easy access to content across devices with iCloud storage and wireless syncing.