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Definition of Legacy

Term used to describe enterprise applications or systems installed in the distant past, but still being used. Typically, they are characterized by outdated technologies, but are still critical to day-to-day operations.

Computer Science

Other definitions of Legacy

Of or pertaining to documents, data, software, or hardware that existed prior to a certain time.

Computer Science

Any feature in the computer system based on older technology for which compatibility continues to be maintained in other system components.

Computer Science