Samsung GALAXY S5 Basics Handbook Manual page 37

 What is a
It is a Device Management tool for your GALAXY device
It stores user's important personal data

Data Sync (Contacts, Calendar, Internet Bookmarks,
[when you update your data, it is applied on your other Samsung devices]

Backup & Restore (Call Logs, Message (SMS & MMS), Wallpaper)
[when you buy a new device / need to restore the information you saved, you can restore them easily]
 You need Samsung account for
log in
Download from
GALAXY Essential
(Origin from Note series)
?
S Note, Scrapbook
 You need Samsung account for back up /
sync
)