Cloud computing is simply the act of accessing a computer or computing resources (think processing power or hard drive space) over the internet. In the Cloud, the computing resources you are accessing are located somewhere else in the world, rather than being held on a physical server onsite.
Let start with some practical examples.
If you are accessing a website such as a social network or online banking, you are accessing the servers of the social network or bank. You are using your phone or computer to access it but the computing as actually at their end and not on your device.
Another example is something like One Drive or DropBox. These cloud storage services allow you to store data such as your documents, photos and videos onto a server (in the cloud) that can be accessed from anywhere on any device and at any time. They are not on your device but the server in the ‘cloud’ which basically means internet connected.
Is Cloud Computing New Technology?
We’ve been accessing remote computing resources for years before the term ‘cloud computing’ came along, so why now is it such a big deal?
The answer is very simple, advances in technology have made using and sharing computing resources much more accessible and affordable for businesses. Previously, you would’ve had to buy the computing resource (expensive servers) and then house it somewhere secure with a constant and reliable internet connection (datacentre) to then access it remotely.
Today you can get access to the same quality of computing resources and pay as you go without owning any computing hardware.
This technology is called virtualisation allowing you to share the computing resources of one server amongst many people, safely and securely.