Versioning which does not exist in dictionary yet but have very valuable meaning to all the geeks. In case if you don’t know, versioning means storing every copy of your file or data, whenever it gets modified the previous version is archived with date and time of modification. Versioning simply allows you to go back in history of any file or any data. You need to know what it was 2 months ago, you can check that. You want to see how many times it has been modified since then you can see. So its very useful and in some cases (e.g softwar.