System.IO.Compression namespace is a new addition in .NET 2.0 Framework. The System.IO.Compression namespace contains classes, namely DeflateStream and GZipStream, which provide basic compression and decompression services for streams. DeflateStream provides methods and properties for compressing and decompressing streams using the Deflate algorithm. GzipStream provides methods and properties used to compress and decompress streams using gzip algorithm. Besides compressing files, one other very good use of new compression features is to implement our own HTTP Module class that compress the HTTP output of our application. The sample code snippets have been written in C#.