An introduction to cloud computing


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An introduction to cloud computing

  1. 1. An Introduction to Cloud Computing What is cloud Computing  In the simplest terms, cloud computing means storing and accessing data and programs over the Internet instead of your computer's hard drive. The cloud is just a metaphor for the Internet. What cloud computing is not about is your hard drive. When you store data on-- or run programs from the hard drive, that's called local storage and computing. The cloud is also not about having a dedicated hardware server in residence. Storing data on a home or office network does not count as utilizing the cloud.  the basic idea of cloud computing is “ a central copy of the softwares are being stored on the sever and the users can access them on PAY PER USE BASIS instead of purchasing them.”  all the processing and related storage will be done under the cloud, and also the cloud computing follows the concept of abstraction and virtualization.
  2. 2. An Introduction to Cloud Computing  For it to be considered "cloud computing," you need to access your data or your programs over the Internet, or at the very least, have that data synchronized with other information over the Net.  In a big business, you may know all there is to know about what's on the other side of the connection; as an individual user, you may never have any idea what kind of massive data-processing is happening on the other end.  The end result is the same: with an online connection, cloud computing can be done anywhere, anytime.
  3. 3. An Introduction to Cloud Computing Consumer vs. Business  We're talking about cloud computing as it impacts individual consumers—those of us who sit back at home or in small-to-medium offices and use the Internet on a regular basis.  There is an entirely different "cloud" when it comes to business. Some businesses choose to implement Software-as-a-Service (SaaS), where the business subscribes to an application it accesses over the Internet. (Think  There's also Platform-as-a-Service (PaaS), where a business can create its own custom applications for use by all in the company. And don't forget the mighty Infrastructure-as-a-Service (IaaS), where players like Amazon, Google, and Rackspace provide a backbone that can be "rented out" by other companies.
  4. 4. An Introduction to Cloud Computing Of course, cloud computing is big business: McKinsey & Company, a global management consulting firm, claims that 80 percent of the large companies in North America that it's surveyed are either looking at using cloud services—or already have. The market is on its way to generating $100 billion a year. Common Cloud Examples You can easily have a local piece of software (for instance, Microsoft Office 365, one of the versions of Office 2013) that utilizes a form of cloud computing for storage (Microsoft Skydrive in the case of Office). That said, Microsoft also offers a set of Web apps that are close versions of Word, Excel, PowerPoint, and OneNote that you can access via your Web browser without installing anything.
  5. 5. An Introduction to Cloud Computing Common examples Google Drive This is a pure cloud computing service, with all the apps and storage found online. Drive is also available on more than just desktop computers; you can use it on tablets like the iPad$499.99 at Amazon or on smartphones. In fact, all of Google's services could be considered cloud computing: Gmail, Google Calendar, Google Reader, Google Voice, and so on. Upgrade to Google Apps and you can use many of the above with your own domain name attached. Apple Icloud  Apple's cloud service is primarily used for online storage and synchronization of your mail, contacts, calendar, and more. All the data you need is available to you on your iOS, Mac OS, or Windows device. iCloud also stores media files.
  6. 6. An Introduction to Cloud Computing Amazon Cloud Drive  Storage at the big retailer is mainly for music, preferably MP3s that you purchase from Amazon.