Data compression is the lowering of the number of bits that should be saved or transmitted and the process is quite important in the web hosting field as info located on hard disks is often compressed in order to take less space. You'll find many different algorithms for compressing information and they have different effectiveness depending on the content. A number of them remove only the redundant bits, so no data will be lost, while others delete unnecessary bits, which leads to worse quality once the data is uncompressed. This method needs a lot of processing time, which means that a hosting server has to be powerful enough in order to be able to compress and uncompress data quickly. An instance how binary code can be compressed is by "remembering" that there are five sequential 1s, for example, as an alternative to storing all five 1s.