Cloud storage is a cloud computing model in which data is stored on remote servers accessed from the Internet, or "cloud." It is maintained, operated and managed by a cloud storage service provider on storage servers that are built on virtualization techniques.
This outsourcing is handy for the casual user who is fed up of having to free up space on their hard drive or purchase new storage for all the photos they can’t stop taking. It’s even better for businesses that want to use the cloud for processing and storage – because users only pay for what they use.
Cloud computing allows businesses to run essential programs and applications through the Internet, saving them time, space, hassle and lots and lots of money. Billing for cloud services works just like the way you pay for utilities like gas and electricity in your home; it’s pay-as-you- go. The cloud is also extremely flexible. For heavy tasks, clients have instant access to scaled-up computing power on the fly. When they’re done, they can simply release it back to the cloud.
The first thing you need to know is that “the cloud” exists in far-flung data centres, which you access via the internet. It is a collection of networked computer hardware that works together to provide many aspects of computing in the form of online services. You can’t physically touch the hardware itself in the public cloud, but you control it remotely via web interfaces.
From any cloud-enabled device you can upload specific items to the cloud using third-party apps such as Dropbox. Once you press upload, your files arrive at the master control data server, situated in a data centre owned by a cloud hosting company. This server directs your files onwards to various data storage servers while making several copies of your files in the process in case of an error. Once this is complete, your files are stored across many machines in the cloud. Whenever you need to retrieve them you can call them onto whatever cloud-enabled device you're using via a web-based interface with the master control server.