 
    4.2.5: understand the concept of storing data in the cloud and other contemporary secondary storage
 
 | Keyword | Definition | 
|---|---|
| Cloud | storing data on a device that's always powered on and connected to the Internet | 
| Data centre | Buildings full of computer servers storing huge amounts of data with an always-on network connection | 
| Virtualisation | hiding the true nature physical nature of a computing resource, e.g. dropbox storage appearing as a drive on your computer when it's actually thousands of miles away |