Definition - What does Legacy System mean?

A legacy system, in the context of computing, refers to outdated computer systems, programming languages or application software that are used instead of available upgraded versions. -


The cost of maintaining an older system can be higher than maintaining a more updated version. The staff might not be familiar with such an outdated version of the system.

Tech support may no longer be available.

The data in the current system might not be compatible with newer systems and conversion may not be possible.

Legacy systems are usually more vulnerable to security threats due to lack of security patches.

Integration of newer systems may be a complicated process as the two systems may have completely different technologies

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