The “Cloud” is just another computer holding your data , photos, address book, documents things you would like to save a use often. When was the last time you’re computer “did something funny” ? Have you backed it up in the last few months ? Is the cloud safe ? its only as safe as the password you use, you would be surprised as to how much info Facebook and or Google have about you already.
Every version of Windows since Windows 7 has this backup option and its free ( with a outlook.com account also free ) and if you have a Gmail address Google also has this cloud backup option ( also free with the gmail address ).
What is the cloud
Everyday Computers 