Samsung Kies from Samsung lets you connect your Samsung mobile to your PC/Laptop. Synchronize data between devices and find new apps. This is the official software from Samsung to transfer data from mobile to PC or Laptop and vice versa.
It makes the file transfer process easy and allows users to install the firmware updates as an alternative to OTA.
Backup and restore a device. Kies supports all Samsung android powered devices (The galaxy Series).
Plug your phone in with the provided USB data cable and Kies will find it and give you tools to deal with it.
Difference between Samsung Kies 3 & Samsung Kies 2
Samsung Kies 3: Supports Galaxy devices starting from Galaxy Note III and above (Android OS 4.3 or over).
Samsung Kies 2: Supports Galaxy devices before Galaxy Note III (including Galaxy S4, Note II, etc).
It will automatically recognize your phone as it includes a set of universal device drivers.