<A href="http://www.zdnet.com/blog/hardware/microsoft-puts-windows-8-on-a-diet-ready-for-web-delivery/16417" target="_blank">Apple opted for web-delivery of OS X 10.7 Lion. Now Microsoft will follow suit</A> with a similar method of delivering Win8 to users. This means compressing files and removing duplicates to keep the download to a reasonable size.