Storage of files that are available online, also known as cloud storage. Prefer tag [online-backup] where there is an element of automation involved in the transfer of data.
Online storage allows users to store their personal files online so that they can easily access it from any computer, provided that the correct credentials is given to access the storage. This is also known as cloud storage.
There are many online storage services on the Internet, such as Google Drive, Microsoft OneDrive, etc. Such services usually come with integration with the computer, so as to allow users to access such storage like they are browsing a local drive.