iCloud is Apple's new service that allows iOS devices and Macs to synchronize automatically and wirelessly by having a "master" depository on iCloud servers. But the move to iCloud can be confusing even to the experts.
Those of you with MobileMe accounts have until June 2012 to make the transition but be aware that iCloud is not a replacement. Several features of MobileMe will be lost.
Macworld publication has put together several very informative articles with details about iCloud here:
http://www.macworld.com/search?q=iCloud#lsrc.nl_mwpvw_h_crawl

