For many people, "the cloud" is a nebulous term, but it simply refers to software and services that operate on the Internet instead of directly on a computer. Dropbox, Netflix, Flickr, Google Drive, and Microsoft Office 365 (a/k/a Outlook) are all cloud services-- they do not need to be installed on a computer.
According to a report by Gartner, one third of digital data will be in the cloud by 2016. Cloud computing is an attractive option for many entrepreneurs, businesses, and governments in developing countries that seek to service large populations but which require an alternative to heavy ICT infrastructure. Moreover, as mobile apps and PC software are increasingly tied to the cloud, its adoption is likely to increase.