What is the cloud?

The definition for the cloud can seem murky, but essentially, it is a term used to describe a global network of servers, each with a unique function. The cloud is not a physical entity, but instead is a vast network of remote servers around the globe which are hooked together and meant to operate as a single ecosystem. These servers are designed to either store and manage data, run applications or deliver content or a service such as streaming videos, web mail, office productivity software or social media. Instead of accessing files and data from a local or personal computer, you are accessing them online from any Internet-capable device—the information will be available anywhere you go and anytime you need it.

Businesses use four different methods to deploy cloud resources. There is a public cloud which shares resources and offers services to the public over the Internet, a private cloud which is not shared and offers services over a private internal network typically hosted on-premises, a hybrid cloud which shares services between public and private clouds depending on their purpose and a community cloud which shares resources only between organisations, such as with government institutions.