An ISO image (International Organization for Standardization) is an archive file (also known as a disc image) of an optical disc, composed of the data contents of every written sector of an optical disc, including the optical disc file system.
ISO images can be created from optical discs, or can be used to recreate optical discs using software from many software vendors. ISO image files typically have a file extension of .iso. The name ISO is taken from the ISO 9660 file system used with CD-ROM media, but an ISO image might also contain a UDF (ISO/IEC 13346) file system.
ISO image is very user friendly as it can be copied into any CD or Disc. Companies seeking redundant archival processes often employed .iso format. In critical storage of multiple sets of data the .iso format has been popular but with the advent of newer formats and storage media its usage has decreased. Some time or the other archival service vendors (see http://www.rollingrproductions.com/ for better understanding) have relied heavily on the .iso format. Software vendors also use the format for data duplication and distribution of the their software products (the world’s leading software vendor, Microsoft too has used it extensively). You can find its usage in every industry – software, digital medial (audio and video; example see http://www.easydisc.net), healthcare and patient care, insurance agencies (for agent training in multiple languages; example see http://www.nriol.net), education etc.
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