High definition video files can be viewed with Silverlight Technology and Microsoft will responsible for transferring these files to the Internet. The transfer of large media files is expensive but Microsoft will still take the trouble to stream Silverlight media files. However, the service will be optional. Streaming done by Microsoft will save content distribution network fees for small developers. According to Microsoft, 700 kbps throughput will be reliable and the free distribution of network content will last for a year..