e/Parallel adoption

Information
has gloss	eng: Parallel adoption is a method for transferring between an old (IT) system to a target (IT) system in an organization. In order to reduce risk, the old and new system run simultaneously for some period of time after which, if the criteria for the new system are met, the old system is disabled. The process requires careful planning and control and a significant investment in labor hours.
lexicalization	eng: parallel adoption
instance of	e/Information systems