Why do I need IISxpress?
The data sent by your web server to your users is probably not compressed. This means the original file will be sent without any attempt to reduce it’s size. Many file types can be compressed very effectively, sometimes to as much as 10% of their original size. This means that a 1MB file in compressed form will occupy the same space as a 100KB file. The effect of this is to reduce the amount of bandwidth used by your web server and also to reduce the download time experienced by your users. Most common web content files will compress to between 50% and 25% (2:1 and 4:1) of their original size.
