Cloud computing: is a phrase used to describe a variety of computing concepts that involve a large number of computers connected through a real-time communication network such as the Internet.
For example: Google docs is a type of cloud solution that allows users to work, share, collaborate and save work/documents in real time over the internet. Google Docs is a free web-based office suite offered by Google within its Google Drive service, it allows you to freely store 30gb of data.