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Legacy System Definition

publish date: 2026/06/23 19:43:4.719559 UTC

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What is a legacy system?

A system that runs exclusively on cloud infrastructure

An older software system that relies on languages and technology no longer used for new systems development

A system that has never been modified since its original release

Any software system that is less than one year old

Correct Answer

An older software system that relies on languages and technology no longer used for new systems development

Explanation

Legacy systems are older systems that rely on languages and technology that are no longer used for new systems development. They have typically been maintained over a long period and may have degraded structure due to accumulated changes.

Reference

Software Engineering, Ian Sommerville, 10th edition

Quizzes you can take where this question appears

Legacy Systems - Definition and Sociotechnical Nature