RIS is a predecessor of windows deployment services. It has some of lot improvements in this version.
I) Here GUI that allows us to select and deploy images and to mange windows deployment services server and clients.
II) It has higher performing and extensible PXE server.
III) It can transfer data and images by using multicast namespace on a standalone server.
IV) A new boot menu format for selecting the boot images.
V) It can transfer data and images by using multicast transmission.
VI) It can deploy windows 2008 and vista operating system. Windows PE is the boot OS, it uses image based installation using .wim file.