A system interconnection is defined as the direct connection of two or more IT systems for the purpose of sharing data and other information resources. Organizations choose to interconnect their IT systems for a variety of reasons:
Exchange data and information among selected users
Provide customized levels of access to proprietary databases
Collaborate on joint projects
Provide full time communications, 24 hours per day, 7 days per week
Provide online training
Provide secure storage of critical data and backup files.