2. INTRODUCTION What is Cloud Computing? Cloud computing is the delivery of computing as a service rather than a product, whereby shared resources, software, and information are provided to computers and other devices as a utility (like the electricity grid) over a network (typically the Internet). for large companies it usually NOT cost effective to purchase 10,000 copies of some software (like MS Office). So now they can "rent" it off of a Companies Cloud system - saving them $$$$ - downside is that it is on the Internet which is NOT reliable enough for these types of companies - so usually a redundant link is set up just in case some ISP has a problem the backup link takes over and no work time is lost.
3. Examples of Cloud Computing Services Web-based email services like Gmail and Hotmail deliver a cloud computing service: users can access their email "in the cloud" from any computer with a browser and Internet connection, regardless of what kind of hardware is on that particular computer. The emails are hosted on Google's and Microsoft's servers, rather than being stored locally on the client computer.
4. Most IT departments are forced to spend a significant portion of their time on frustrating implementation, maintenance, and upgrade projects that too often don’t add significant value to the company’s bottom line. Increasingly, IT teams are turning to cloud computing technology to minimize the time spent on lower-value activities and allow IT to focus on strategic activities with greater impact on the business.